; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt -S -instcombine < %s | FileCheck %s ; This is the canonical form for a type-changing min/max. define i64 @t1(i32 %a) { ; CHECK-LABEL: @t1( ; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i32 [[A:%.*]], 5 ; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i32 [[A]], i32 5 ; CHECK-NEXT: [[TMP3:%.*]] = sext i32 [[TMP2]] to i64 ; CHECK-NEXT: ret i64 [[TMP3]] ; %1 = icmp slt i32 %a, 5 %2 = select i1 %1, i32 %a, i32 5 %3 = sext i32 %2 to i64 ret i64 %3 } ; Check this is converted into canonical form, as above. define i64 @t2(i32 %a) { ; CHECK-LABEL: @t2( ; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i32 [[A:%.*]], 5 ; CHECK-NEXT: [[NARROW:%.*]] = select i1 [[TMP1]], i32 [[A]], i32 5 ; CHECK-NEXT: [[TMP2:%.*]] = sext i32 [[NARROW]] to i64 ; CHECK-NEXT: ret i64 [[TMP2]] ; %1 = icmp slt i32 %a, 5 %2 = sext i32 %a to i64 %3 = select i1 %1, i64 %2, i64 5 ret i64 %3 } ; Same as @t2, with flipped operands and zext instead of sext. define i64 @t3(i32 %a) { ; CHECK-LABEL: @t3( ; CHECK-NEXT: [[TMP1:%.*]] = icmp ugt i32 [[A:%.*]], 5 ; CHECK-NEXT: [[NARROW:%.*]] = select i1 [[TMP1]], i32 [[A]], i32 5 ; CHECK-NEXT: [[TMP2:%.*]] = zext i32 [[NARROW]] to i64 ; CHECK-NEXT: ret i64 [[TMP2]] ; %1 = icmp ult i32 %a, 5 %2 = zext i32 %a to i64 %3 = select i1 %1, i64 5, i64 %2 ret i64 %3 } ; Same again, with trunc. define i32 @t4(i64 %a) { ; CHECK-LABEL: @t4( ; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i64 [[A:%.*]], 5 ; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i64 [[A]], i64 5 ; CHECK-NEXT: [[TMP3:%.*]] = trunc i64 [[TMP2]] to i32 ; CHECK-NEXT: ret i32 [[TMP3]] ; %1 = icmp slt i64 %a, 5 %2 = trunc i64 %a to i32 %3 = select i1 %1, i32 %2, i32 5 ret i32 %3 } ; Same as @t3, but with mismatched signedness between icmp and zext. define i64 @t5(i32 %a) { ; CHECK-LABEL: @t5( ; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i32 [[A:%.*]], 5 ; CHECK-NEXT: [[NARROW:%.*]] = select i1 [[TMP1]], i32 [[A]], i32 5 ; CHECK-NEXT: [[TMP2:%.*]] = zext i32 [[NARROW]] to i64 ; CHECK-NEXT: ret i64 [[TMP2]] ; %1 = icmp slt i32 %a, 5 %2 = zext i32 %a to i64 %3 = select i1 %1, i64 5, i64 %2 ret i64 %3 } define float @t6(i32 %a) { ; CHECK-LABEL: @t6( ; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i32 [[A:%.*]], 0 ; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i32 [[A]], i32 0 ; CHECK-NEXT: [[TMP3:%.*]] = sitofp i32 [[TMP2]] to float ; CHECK-NEXT: ret float [[TMP3]] ; %1 = icmp slt i32 %a, 0 %2 = select i1 %1, i32 %a, i32 0 %3 = sitofp i32 %2 to float ret float %3 } define i16 @t7(i32 %a) { ; CHECK-LABEL: @t7( ; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i32 [[A:%.*]], -32768 ; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i32 [[A]], i32 -32768 ; CHECK-NEXT: [[TMP3:%.*]] = trunc i32 [[TMP2]] to i16 ; CHECK-NEXT: ret i16 [[TMP3]] ; %1 = icmp slt i32 %a, -32768 %2 = trunc i32 %a to i16 %3 = select i1 %1, i16 %2, i16 -32768 ret i16 %3 } ; Just check for no infinite loop. InstSimplify liked to ; "simplify" -32767 by removing all the sign bits, ; which led to a canonicalization fight between different ; parts of instcombine. define i32 @t8(i64 %a, i32 %b) { ; CHECK-LABEL: @t8( ; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i64 [[A:%.*]], -32767 ; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i64 [[A]], i64 -32767 ; CHECK-NEXT: [[TMP3:%.*]] = trunc i64 [[TMP2]] to i32 ; CHECK-NEXT: [[TMP4:%.*]] = icmp slt i32 [[B:%.*]], 42 ; CHECK-NEXT: [[TMP5:%.*]] = select i1 [[TMP4]], i32 42, i32 [[TMP3]] ; CHECK-NEXT: [[TMP6:%.*]] = icmp ne i32 [[TMP5]], [[B]] ; CHECK-NEXT: [[TMP7:%.*]] = zext i1 [[TMP6]] to i32 ; CHECK-NEXT: ret i32 [[TMP7]] ; %1 = icmp slt i64 %a, -32767 %2 = select i1 %1, i64 %a, i64 -32767 %3 = trunc i64 %2 to i32 %4 = icmp slt i32 %b, 42 %5 = select i1 %4, i32 42, i32 %3 %6 = icmp ne i32 %5, %b %7 = zext i1 %6 to i32 ret i32 %7 } ; Ensure this doesn't get converted to a min/max. define i64 @t9(i32 %a) { ; CHECK-LABEL: @t9( ; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i32 [[A:%.*]], -1 ; CHECK-NEXT: [[TMP2:%.*]] = sext i32 [[A]] to i64 ; CHECK-NEXT: [[TMP3:%.*]] = select i1 [[TMP1]], i64 [[TMP2]], i64 4294967295 ; CHECK-NEXT: ret i64 [[TMP3]] ; %1 = icmp sgt i32 %a, -1 %2 = sext i32 %a to i64 %3 = select i1 %1, i64 %2, i64 4294967295 ret i64 %3 } define float @t10(i32 %x) { ; CHECK-LABEL: @t10( ; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i32 [[X:%.*]], 255 ; CHECK-NEXT: [[R1:%.*]] = select i1 [[TMP1]], i32 [[X]], i32 255 ; CHECK-NEXT: [[TMP2:%.*]] = sitofp i32 [[R1]] to float ; CHECK-NEXT: ret float [[TMP2]] ; %f_x = sitofp i32 %x to float %cmp = icmp sgt i32 %x, 255 %r = select i1 %cmp, float %f_x, float 255.0 ret float %r } define float @t11(i64 %x) { ; CHECK-LABEL: @t11( ; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i64 [[X:%.*]], 255 ; CHECK-NEXT: [[R1:%.*]] = select i1 [[TMP1]], i64 [[X]], i64 255 ; CHECK-NEXT: [[TMP2:%.*]] = sitofp i64 [[R1]] to float ; CHECK-NEXT: ret float [[TMP2]] ; %f_x = sitofp i64 %x to float %cmp = icmp sgt i64 %x, 255 %r = select i1 %cmp, float %f_x, float 255.0 ret float %r } ; Reuse the first 2 bitcasts as the select operands. define <4 x i32> @bitcasts_fcmp_1(<2 x i64> %a, <2 x i64> %b) { ; CHECK-LABEL: @bitcasts_fcmp_1( ; CHECK-NEXT: [[T0:%.*]] = bitcast <2 x i64> [[A:%.*]] to <4 x float> ; CHECK-NEXT: [[T1:%.*]] = bitcast <2 x i64> [[B:%.*]] to <4 x float> ; CHECK-NEXT: [[T2:%.*]] = fcmp olt <4 x float> [[T1]], [[T0]] ; CHECK-NEXT: [[TMP1:%.*]] = select <4 x i1> [[T2]], <4 x float> [[T0]], <4 x float> [[T1]] ; CHECK-NEXT: [[T5:%.*]] = bitcast <4 x float> [[TMP1]] to <4 x i32> ; CHECK-NEXT: ret <4 x i32> [[T5]] ; %t0 = bitcast <2 x i64> %a to <4 x float> %t1 = bitcast <2 x i64> %b to <4 x float> %t2 = fcmp olt <4 x float> %t1, %t0 %t3 = bitcast <2 x i64> %a to <4 x i32> %t4 = bitcast <2 x i64> %b to <4 x i32> %t5 = select <4 x i1> %t2, <4 x i32> %t3, <4 x i32> %t4 ret <4 x i32> %t5 } ; Switch cmp operand order. define <4 x i32> @bitcasts_fcmp_2(<2 x i64> %a, <2 x i64> %b) { ; CHECK-LABEL: @bitcasts_fcmp_2( ; CHECK-NEXT: [[T0:%.*]] = bitcast <2 x i64> [[A:%.*]] to <4 x float> ; CHECK-NEXT: [[T1:%.*]] = bitcast <2 x i64> [[B:%.*]] to <4 x float> ; CHECK-NEXT: [[T2:%.*]] = fcmp olt <4 x float> [[T0]], [[T1]] ; CHECK-NEXT: [[TMP1:%.*]] = select <4 x i1> [[T2]], <4 x float> [[T0]], <4 x float> [[T1]] ; CHECK-NEXT: [[T5:%.*]] = bitcast <4 x float> [[TMP1]] to <4 x i32> ; CHECK-NEXT: ret <4 x i32> [[T5]] ; %t0 = bitcast <2 x i64> %a to <4 x float> %t1 = bitcast <2 x i64> %b to <4 x float> %t2 = fcmp olt <4 x float> %t0, %t1 %t3 = bitcast <2 x i64> %a to <4 x i32> %t4 = bitcast <2 x i64> %b to <4 x i32> %t5 = select <4 x i1> %t2, <4 x i32> %t3, <4 x i32> %t4 ret <4 x i32> %t5 } ; Integer cmp should have the same transforms. define <4 x float> @bitcasts_icmp(<2 x i64> %a, <2 x i64> %b) { ; CHECK-LABEL: @bitcasts_icmp( ; CHECK-NEXT: [[T0:%.*]] = bitcast <2 x i64> [[A:%.*]] to <4 x i32> ; CHECK-NEXT: [[T1:%.*]] = bitcast <2 x i64> [[B:%.*]] to <4 x i32> ; CHECK-NEXT: [[T2:%.*]] = icmp slt <4 x i32> [[T1]], [[T0]] ; CHECK-NEXT: [[TMP1:%.*]] = select <4 x i1> [[T2]], <4 x i32> [[T0]], <4 x i32> [[T1]] ; CHECK-NEXT: [[T5:%.*]] = bitcast <4 x i32> [[TMP1]] to <4 x float> ; CHECK-NEXT: ret <4 x float> [[T5]] ; %t0 = bitcast <2 x i64> %a to <4 x i32> %t1 = bitcast <2 x i64> %b to <4 x i32> %t2 = icmp slt <4 x i32> %t1, %t0 %t3 = bitcast <2 x i64> %a to <4 x float> %t4 = bitcast <2 x i64> %b to <4 x float> %t5 = select <4 x i1> %t2, <4 x float> %t3, <4 x float> %t4 ret <4 x float> %t5 } ; SMIN(SMIN(X, 11), 92) -> SMIN(X, 11) define i32 @test68(i32 %x) { ; CHECK-LABEL: @test68( ; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i32 [[X:%.*]], 11 ; CHECK-NEXT: [[COND:%.*]] = select i1 [[TMP1]], i32 [[X]], i32 11 ; CHECK-NEXT: ret i32 [[COND]] ; %cmp = icmp slt i32 11, %x %cond = select i1 %cmp, i32 11, i32 %x %cmp3 = icmp slt i32 92, %cond %retval = select i1 %cmp3, i32 92, i32 %cond ret i32 %retval } define <2 x i32> @test68vec(<2 x i32> %x) { ; CHECK-LABEL: @test68vec( ; CHECK-NEXT: [[TMP1:%.*]] = icmp slt <2 x i32> [[X:%.*]], ; CHECK-NEXT: [[COND:%.*]] = select <2 x i1> [[TMP1]], <2 x i32> [[X]], <2 x i32> ; CHECK-NEXT: ret <2 x i32> [[COND]] ; %cmp = icmp slt <2 x i32> , %x %cond = select <2 x i1> %cmp, <2 x i32> , <2 x i32> %x %cmp3 = icmp slt <2 x i32> , %cond %retval = select <2 x i1> %cmp3, <2 x i32> , <2 x i32> %cond ret <2 x i32> %retval } ; MIN(MIN(X, 24), 83) -> MIN(X, 24) define i32 @test69(i32 %x) { ; CHECK-LABEL: @test69( ; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[X:%.*]], 24 ; CHECK-NEXT: [[COND:%.*]] = select i1 [[TMP1]], i32 [[X]], i32 24 ; CHECK-NEXT: ret i32 [[COND]] ; %cmp = icmp ult i32 24, %x %cond = select i1 %cmp, i32 24, i32 %x %cmp3 = icmp ult i32 83, %cond %retval = select i1 %cmp3, i32 83, i32 %cond ret i32 %retval } ; SMAX(SMAX(X, 75), 36) -> SMAX(X, 75) define i32 @test70(i32 %x) { ; CHECK-LABEL: @test70( ; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i32 [[X:%.*]], 75 ; CHECK-NEXT: [[COND:%.*]] = select i1 [[TMP1]], i32 [[X]], i32 75 ; CHECK-NEXT: ret i32 [[COND]] ; %cmp = icmp slt i32 %x, 75 %cond = select i1 %cmp, i32 75, i32 %x %cmp3 = icmp slt i32 %cond, 36 %retval = select i1 %cmp3, i32 36, i32 %cond ret i32 %retval } ; MAX(MAX(X, 68), 47) -> MAX(X, 68) define i32 @test71(i32 %x) { ; CHECK-LABEL: @test71( ; CHECK-NEXT: [[TMP1:%.*]] = icmp ugt i32 [[X:%.*]], 68 ; CHECK-NEXT: [[COND:%.*]] = select i1 [[TMP1]], i32 [[X]], i32 68 ; CHECK-NEXT: ret i32 [[COND]] ; %cmp = icmp ult i32 %x, 68 %cond = select i1 %cmp, i32 68, i32 %x %cmp3 = icmp ult i32 %cond, 47 %retval = select i1 %cmp3, i32 47, i32 %cond ret i32 %retval } ; SMIN(SMIN(X, 92), 11) -> SMIN(X, 11) define i32 @test72(i32 %x) { ; CHECK-LABEL: @test72( ; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i32 [[X:%.*]], 11 ; CHECK-NEXT: [[RETVAL:%.*]] = select i1 [[TMP1]], i32 [[X]], i32 11 ; CHECK-NEXT: ret i32 [[RETVAL]] ; %cmp = icmp sgt i32 %x, 92 %cond = select i1 %cmp, i32 92, i32 %x %cmp3 = icmp sgt i32 %cond, 11 %retval = select i1 %cmp3, i32 11, i32 %cond ret i32 %retval } define <2 x i32> @test72vec(<2 x i32> %x) { ; CHECK-LABEL: @test72vec( ; CHECK-NEXT: [[TMP1:%.*]] = icmp slt <2 x i32> [[X:%.*]], ; CHECK-NEXT: [[RETVAL:%.*]] = select <2 x i1> [[TMP1]], <2 x i32> [[X]], <2 x i32> ; CHECK-NEXT: ret <2 x i32> [[RETVAL]] ; %cmp = icmp sgt <2 x i32> %x, %cond = select <2 x i1> %cmp, <2 x i32> , <2 x i32> %x %cmp3 = icmp sgt <2 x i32> %cond, %retval = select <2 x i1> %cmp3, <2 x i32> , <2 x i32> %cond ret <2 x i32> %retval } ; MIN(MIN(X, 83), 24) -> MIN(X, 24) define i32 @test73(i32 %x) { ; CHECK-LABEL: @test73( ; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[X:%.*]], 24 ; CHECK-NEXT: [[RETVAL:%.*]] = select i1 [[TMP1]], i32 [[X]], i32 24 ; CHECK-NEXT: ret i32 [[RETVAL]] ; %cmp = icmp ugt i32 %x, 83 %cond = select i1 %cmp, i32 83, i32 %x %cmp3 = icmp ugt i32 %cond, 24 %retval = select i1 %cmp3, i32 24, i32 %cond ret i32 %retval } ; SMAX(SMAX(X, 36), 75) -> SMAX(X, 75) define i32 @test74(i32 %x) { ; CHECK-LABEL: @test74( ; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i32 [[X:%.*]], 75 ; CHECK-NEXT: [[RETVAL:%.*]] = select i1 [[TMP1]], i32 [[X]], i32 75 ; CHECK-NEXT: ret i32 [[RETVAL]] ; %cmp = icmp slt i32 %x, 36 %cond = select i1 %cmp, i32 36, i32 %x %cmp3 = icmp slt i32 %cond, 75 %retval = select i1 %cmp3, i32 75, i32 %cond ret i32 %retval } ; MAX(MAX(X, 47), 68) -> MAX(X, 68) define i32 @test75(i32 %x) { ; CHECK-LABEL: @test75( ; CHECK-NEXT: [[TMP1:%.*]] = icmp ugt i32 [[X:%.*]], 68 ; CHECK-NEXT: [[RETVAL:%.*]] = select i1 [[TMP1]], i32 [[X]], i32 68 ; CHECK-NEXT: ret i32 [[RETVAL]] ; %cmp = icmp ult i32 %x, 47 %cond = select i1 %cmp, i32 47, i32 %x %cmp3 = icmp ult i32 %cond, 68 %retval = select i1 %cmp3, i32 68, i32 %cond ret i32 %retval } ; The next 10 tests are value clamping with constants: ; https://llvm.org/bugs/show_bug.cgi?id=31693 ; (X SMAX(SMIN(X, C2), C1) define i32 @clamp_signed1(i32 %x) { ; CHECK-LABEL: @clamp_signed1( ; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[X:%.*]], 255 ; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 255 ; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i32 [[MIN]], 15 ; CHECK-NEXT: [[R:%.*]] = select i1 [[TMP1]], i32 [[MIN]], i32 15 ; CHECK-NEXT: ret i32 [[R]] ; %cmp2 = icmp slt i32 %x, 255 %min = select i1 %cmp2, i32 %x, i32 255 %cmp1 = icmp slt i32 %x, 15 %r = select i1 %cmp1, i32 15, i32 %min ret i32 %r } ; (X >s C1) ? C1 : SMAX(X, C2) ==> SMIN(SMAX(X, C2), C1) define i32 @clamp_signed2(i32 %x) { ; CHECK-LABEL: @clamp_signed2( ; CHECK-NEXT: [[CMP2:%.*]] = icmp sgt i32 [[X:%.*]], 15 ; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 15 ; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i32 [[MAX]], 255 ; CHECK-NEXT: [[R:%.*]] = select i1 [[TMP1]], i32 [[MAX]], i32 255 ; CHECK-NEXT: ret i32 [[R]] ; %cmp2 = icmp sgt i32 %x, 15 %max = select i1 %cmp2, i32 %x, i32 15 %cmp1 = icmp sgt i32 %x, 255 %r = select i1 %cmp1, i32 255, i32 %max ret i32 %r } ; (X >s C1) ? SMIN(X, C2) : C1 ==> SMAX(SMIN(X, C2), C1) define i32 @clamp_signed3(i32 %x) { ; CHECK-LABEL: @clamp_signed3( ; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[X:%.*]], 255 ; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 255 ; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i32 [[MIN]], 15 ; CHECK-NEXT: [[R:%.*]] = select i1 [[TMP1]], i32 [[MIN]], i32 15 ; CHECK-NEXT: ret i32 [[R]] ; %cmp2 = icmp slt i32 %x, 255 %min = select i1 %cmp2, i32 %x, i32 255 %cmp1 = icmp sgt i32 %x, 15 %r = select i1 %cmp1, i32 %min, i32 15 ret i32 %r } ; (X SMIN(SMAX(X, C1), C2) define i32 @clamp_signed4(i32 %x) { ; CHECK-LABEL: @clamp_signed4( ; CHECK-NEXT: [[CMP2:%.*]] = icmp sgt i32 [[X:%.*]], 15 ; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 15 ; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i32 [[MAX]], 255 ; CHECK-NEXT: [[R:%.*]] = select i1 [[TMP1]], i32 [[MAX]], i32 255 ; CHECK-NEXT: ret i32 [[R]] ; %cmp2 = icmp sgt i32 %x, 15 %max = select i1 %cmp2, i32 %x, i32 15 %cmp1 = icmp slt i32 %x, 255 %r = select i1 %cmp1, i32 %max, i32 255 ret i32 %r } ; (X UMAX(UMIN(X, C2), C1) define i32 @clamp_unsigned1(i32 %x) { ; CHECK-LABEL: @clamp_unsigned1( ; CHECK-NEXT: [[CMP2:%.*]] = icmp ult i32 [[X:%.*]], 255 ; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 255 ; CHECK-NEXT: [[TMP1:%.*]] = icmp ugt i32 [[MIN]], 15 ; CHECK-NEXT: [[R:%.*]] = select i1 [[TMP1]], i32 [[MIN]], i32 15 ; CHECK-NEXT: ret i32 [[R]] ; %cmp2 = icmp ult i32 %x, 255 %min = select i1 %cmp2, i32 %x, i32 255 %cmp1 = icmp ult i32 %x, 15 %r = select i1 %cmp1, i32 15, i32 %min ret i32 %r } ; (X >u C1) ? C1 : UMAX(X, C2) ==> UMIN(UMAX(X, C2), C1) define i32 @clamp_unsigned2(i32 %x) { ; CHECK-LABEL: @clamp_unsigned2( ; CHECK-NEXT: [[CMP2:%.*]] = icmp ugt i32 [[X:%.*]], 15 ; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 15 ; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[MAX]], 255 ; CHECK-NEXT: [[R:%.*]] = select i1 [[TMP1]], i32 [[MAX]], i32 255 ; CHECK-NEXT: ret i32 [[R]] ; %cmp2 = icmp ugt i32 %x, 15 %max = select i1 %cmp2, i32 %x, i32 15 %cmp1 = icmp ugt i32 %x, 255 %r = select i1 %cmp1, i32 255, i32 %max ret i32 %r } ; (X >u C1) ? UMIN(X, C2) : C1 ==> UMAX(UMIN(X, C2), C1) define i32 @clamp_unsigned3(i32 %x) { ; CHECK-LABEL: @clamp_unsigned3( ; CHECK-NEXT: [[CMP2:%.*]] = icmp ult i32 [[X:%.*]], 255 ; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 255 ; CHECK-NEXT: [[TMP1:%.*]] = icmp ugt i32 [[MIN]], 15 ; CHECK-NEXT: [[R:%.*]] = select i1 [[TMP1]], i32 [[MIN]], i32 15 ; CHECK-NEXT: ret i32 [[R]] ; %cmp2 = icmp ult i32 %x, 255 %min = select i1 %cmp2, i32 %x, i32 255 %cmp1 = icmp ugt i32 %x, 15 %r = select i1 %cmp1, i32 %min, i32 15 ret i32 %r } ; (X UMIN(UMAX(X, C2), C1) define i32 @clamp_unsigned4(i32 %x) { ; CHECK-LABEL: @clamp_unsigned4( ; CHECK-NEXT: [[CMP2:%.*]] = icmp ugt i32 [[X:%.*]], 15 ; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP2]], i32 [[X]], i32 15 ; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[MAX]], 255 ; CHECK-NEXT: [[R:%.*]] = select i1 [[TMP1]], i32 [[MAX]], i32 255 ; CHECK-NEXT: ret i32 [[R]] ; %cmp2 = icmp ugt i32 %x, 15 %max = select i1 %cmp2, i32 %x, i32 15 %cmp1 = icmp ult i32 %x, 255 %r = select i1 %cmp1, i32 %max, i32 255 ret i32 %r } ; Check that clamp is recognized and there is no infinite ; loop because of reverse cmp transformation: ; (icmp sgt smin(PositiveA, B) 0) -> (icmp sgt B 0) define i32 @clamp_check_for_no_infinite_loop1(i32 %i) { ; CHECK-LABEL: @clamp_check_for_no_infinite_loop1( ; CHECK-NEXT: [[CMP1:%.*]] = icmp slt i32 [[I:%.*]], 255 ; CHECK-NEXT: [[SEL1:%.*]] = select i1 [[CMP1]], i32 [[I]], i32 255 ; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i32 [[SEL1]], 0 ; CHECK-NEXT: [[RES:%.*]] = select i1 [[TMP1]], i32 [[SEL1]], i32 0 ; CHECK-NEXT: ret i32 [[RES]] ; %cmp1 = icmp slt i32 %i, 255 %sel1 = select i1 %cmp1, i32 %i, i32 255 %cmp2 = icmp slt i32 %i, 0 %res = select i1 %cmp2, i32 0, i32 %sel1 ret i32 %res } ; Check that there is no infinite loop in case of: ; (icmp slt smax(NegativeA, B) 0) -> (icmp slt B 0) define i32 @clamp_check_for_no_infinite_loop2(i32 %i) { ; CHECK-LABEL: @clamp_check_for_no_infinite_loop2( ; CHECK-NEXT: [[CMP1:%.*]] = icmp sgt i32 [[I:%.*]], -255 ; CHECK-NEXT: [[SEL1:%.*]] = select i1 [[CMP1]], i32 [[I]], i32 -255 ; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i32 [[SEL1]], 0 ; CHECK-NEXT: [[RES:%.*]] = select i1 [[TMP1]], i32 [[SEL1]], i32 0 ; CHECK-NEXT: ret i32 [[RES]] ; %cmp1 = icmp sgt i32 %i, -255 %sel1 = select i1 %cmp1, i32 %i, i32 -255 %cmp2 = icmp slt i32 %i, 0 %res = select i1 %cmp2, i32 %sel1, i32 0 ret i32 %res } ; Check that there is no infinite loop because of reverse cmp transformation: ; (icmp slt smax(PositiveA, B) 2) -> (icmp eq B 1) define i32 @clamp_check_for_no_infinite_loop3(i32 %i) { ; CHECK-LABEL: @clamp_check_for_no_infinite_loop3( ; CHECK-NEXT: [[I2:%.*]] = icmp sgt i32 [[I:%.*]], 1 ; CHECK-NEXT: [[I3:%.*]] = select i1 [[I2]], i32 [[I]], i32 1 ; CHECK-NEXT: br i1 true, label [[TRUELABEL:%.*]], label [[FALSELABEL:%.*]] ; CHECK: truelabel: ; CHECK-NEXT: [[I5:%.*]] = icmp slt i32 [[I3]], 2 ; CHECK-NEXT: [[I6:%.*]] = select i1 [[I5]], i32 [[I3]], i32 2 ; CHECK-NEXT: [[I7:%.*]] = shl nuw nsw i32 [[I6]], 2 ; CHECK-NEXT: ret i32 [[I7]] ; CHECK: falselabel: ; CHECK-NEXT: ret i32 0 ; %i2 = icmp sgt i32 %i, 1 %i3 = select i1 %i2, i32 %i, i32 1 %i4 = icmp sgt i32 %i3, 0 br i1 %i4, label %truelabel, label %falselabel truelabel: ; %i<=1, %i3>0 %i5 = icmp slt i32 %i3, 2 %i6 = select i1 %i5, i32 %i3, i32 2 %i7 = shl nuw nsw i32 %i6, 2 ret i32 %i7 falselabel: ret i32 0 } ; The next 3 min tests should canonicalize to the same form...and not infinite loop. define double @PR31751_umin1(i32 %x) { ; CHECK-LABEL: @PR31751_umin1( ; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[X:%.*]], 2147483647 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[TMP1]], i32 [[X]], i32 2147483647 ; CHECK-NEXT: [[CONV:%.*]] = sitofp i32 [[SEL]] to double ; CHECK-NEXT: ret double [[CONV]] ; %cmp = icmp slt i32 %x, 0 %sel = select i1 %cmp, i32 2147483647, i32 %x %conv = sitofp i32 %sel to double ret double %conv } define double @PR31751_umin2(i32 %x) { ; CHECK-LABEL: @PR31751_umin2( ; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[X:%.*]], 2147483647 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 [[X]], i32 2147483647 ; CHECK-NEXT: [[CONV:%.*]] = sitofp i32 [[SEL]] to double ; CHECK-NEXT: ret double [[CONV]] ; %cmp = icmp ult i32 %x, 2147483647 %sel = select i1 %cmp, i32 %x, i32 2147483647 %conv = sitofp i32 %sel to double ret double %conv } define double @PR31751_umin3(i32 %x) { ; CHECK-LABEL: @PR31751_umin3( ; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[X:%.*]], 2147483647 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[TMP1]], i32 [[X]], i32 2147483647 ; CHECK-NEXT: [[CONV:%.*]] = sitofp i32 [[SEL]] to double ; CHECK-NEXT: ret double [[CONV]] ; %cmp = icmp ugt i32 %x, 2147483647 %sel = select i1 %cmp, i32 2147483647, i32 %x %conv = sitofp i32 %sel to double ret double %conv } ; The next 3 max tests should canonicalize to the same form...and not infinite loop. define double @PR31751_umax1(i32 %x) { ; CHECK-LABEL: @PR31751_umax1( ; CHECK-NEXT: [[TMP1:%.*]] = icmp ugt i32 [[X:%.*]], -2147483648 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[TMP1]], i32 [[X]], i32 -2147483648 ; CHECK-NEXT: [[CONV:%.*]] = sitofp i32 [[SEL]] to double ; CHECK-NEXT: ret double [[CONV]] ; %cmp = icmp sgt i32 %x, -1 %sel = select i1 %cmp, i32 2147483648, i32 %x %conv = sitofp i32 %sel to double ret double %conv } define double @PR31751_umax2(i32 %x) { ; CHECK-LABEL: @PR31751_umax2( ; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i32 [[X:%.*]], -2147483648 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 [[X]], i32 -2147483648 ; CHECK-NEXT: [[CONV:%.*]] = sitofp i32 [[SEL]] to double ; CHECK-NEXT: ret double [[CONV]] ; %cmp = icmp ugt i32 %x, 2147483648 %sel = select i1 %cmp, i32 %x, i32 2147483648 %conv = sitofp i32 %sel to double ret double %conv } define double @PR31751_umax3(i32 %x) { ; CHECK-LABEL: @PR31751_umax3( ; CHECK-NEXT: [[TMP1:%.*]] = icmp ugt i32 [[X:%.*]], -2147483648 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[TMP1]], i32 [[X]], i32 -2147483648 ; CHECK-NEXT: [[CONV:%.*]] = sitofp i32 [[SEL]] to double ; CHECK-NEXT: ret double [[CONV]] ; %cmp = icmp ult i32 %x, 2147483648 %sel = select i1 %cmp, i32 2147483648, i32 %x %conv = sitofp i32 %sel to double ret double %conv } ; The icmp/select form a canonical smax, so don't hide that by folding the final bitcast into the select. define float @bitcast_scalar_smax(float %x, float %y) { ; CHECK-LABEL: @bitcast_scalar_smax( ; CHECK-NEXT: [[BCX:%.*]] = bitcast float [[X:%.*]] to i32 ; CHECK-NEXT: [[BCY:%.*]] = bitcast float [[Y:%.*]] to i32 ; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[BCX]], [[BCY]] ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 [[BCX]], i32 [[BCY]] ; CHECK-NEXT: [[BCS:%.*]] = bitcast i32 [[SEL]] to float ; CHECK-NEXT: ret float [[BCS]] ; %bcx = bitcast float %x to i32 %bcy = bitcast float %y to i32 %cmp = icmp sgt i32 %bcx, %bcy %sel = select i1 %cmp, i32 %bcx, i32 %bcy %bcs = bitcast i32 %sel to float ret float %bcs } ; FIXME: Create a canonical umax by bitcasting the select. define float @bitcast_scalar_umax(float %x, float %y) { ; CHECK-LABEL: @bitcast_scalar_umax( ; CHECK-NEXT: [[BCX:%.*]] = bitcast float [[X:%.*]] to i32 ; CHECK-NEXT: [[BCY:%.*]] = bitcast float [[Y:%.*]] to i32 ; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i32 [[BCX]], [[BCY]] ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], float [[X]], float [[Y]] ; CHECK-NEXT: ret float [[SEL]] ; %bcx = bitcast float %x to i32 %bcy = bitcast float %y to i32 %cmp = icmp ugt i32 %bcx, %bcy %sel = select i1 %cmp, float %x, float %y ret float %sel } ; PR32306 - https://bugs.llvm.org/show_bug.cgi?id=32306 ; The icmp/select form a canonical smin, so don't hide that by folding the final bitcast into the select. define <8 x float> @bitcast_vector_smin(<8 x float> %x, <8 x float> %y) { ; CHECK-LABEL: @bitcast_vector_smin( ; CHECK-NEXT: [[BCX:%.*]] = bitcast <8 x float> [[X:%.*]] to <8 x i32> ; CHECK-NEXT: [[BCY:%.*]] = bitcast <8 x float> [[Y:%.*]] to <8 x i32> ; CHECK-NEXT: [[CMP:%.*]] = icmp slt <8 x i32> [[BCX]], [[BCY]] ; CHECK-NEXT: [[SEL:%.*]] = select <8 x i1> [[CMP]], <8 x i32> [[BCX]], <8 x i32> [[BCY]] ; CHECK-NEXT: [[BCS:%.*]] = bitcast <8 x i32> [[SEL]] to <8 x float> ; CHECK-NEXT: ret <8 x float> [[BCS]] ; %bcx = bitcast <8 x float> %x to <8 x i32> %bcy = bitcast <8 x float> %y to <8 x i32> %cmp = icmp slt <8 x i32> %bcx, %bcy %sel = select <8 x i1> %cmp, <8 x i32> %bcx, <8 x i32> %bcy %bcs = bitcast <8 x i32> %sel to <8 x float> ret <8 x float> %bcs } ; FIXME: Create a canonical umin by bitcasting the select. define <8 x float> @bitcast_vector_umin(<8 x float> %x, <8 x float> %y) { ; CHECK-LABEL: @bitcast_vector_umin( ; CHECK-NEXT: [[BCX:%.*]] = bitcast <8 x float> [[X:%.*]] to <8 x i32> ; CHECK-NEXT: [[BCY:%.*]] = bitcast <8 x float> [[Y:%.*]] to <8 x i32> ; CHECK-NEXT: [[CMP:%.*]] = icmp slt <8 x i32> [[BCX]], [[BCY]] ; CHECK-NEXT: [[SEL:%.*]] = select <8 x i1> [[CMP]], <8 x float> [[X]], <8 x float> [[Y]] ; CHECK-NEXT: ret <8 x float> [[SEL]] ; %bcx = bitcast <8 x float> %x to <8 x i32> %bcy = bitcast <8 x float> %y to <8 x i32> %cmp = icmp slt <8 x i32> %bcx, %bcy %sel = select <8 x i1> %cmp, <8 x float> %x, <8 x float> %y ret <8 x float> %sel } ; Check that we look through cast and recognize min idiom. define zeroext i8 @look_through_cast1(i32 %x) { ; CHECK-LABEL: @look_through_cast1( ; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i32 [[X:%.*]], 511 ; CHECK-NEXT: [[RES1:%.*]] = select i1 [[TMP1]], i32 [[X]], i32 511 ; CHECK-NEXT: [[TMP2:%.*]] = trunc i32 [[RES1]] to i8 ; CHECK-NEXT: ret i8 [[TMP2]] ; %cmp1 = icmp slt i32 %x, 511 %x_trunc = trunc i32 %x to i8 %res = select i1 %cmp1, i8 %x_trunc, i8 255 ret i8 %res } ; Check that we look through cast but min is not recognized. define zeroext i8 @look_through_cast2(i32 %x) { ; CHECK-LABEL: @look_through_cast2( ; CHECK-NEXT: [[CMP1:%.*]] = icmp slt i32 [[X:%.*]], 510 ; CHECK-NEXT: [[X_TRUNC:%.*]] = trunc i32 [[X]] to i8 ; CHECK-NEXT: [[RES:%.*]] = select i1 [[CMP1]], i8 [[X_TRUNC]], i8 -1 ; CHECK-NEXT: ret i8 [[RES]] ; %cmp1 = icmp slt i32 %x, 510 %x_trunc = trunc i32 %x to i8 %res = select i1 %cmp1, i8 %x_trunc, i8 255 ret i8 %res } define <2 x i8> @min_through_cast_vec1(<2 x i32> %x) { ; CHECK-LABEL: @min_through_cast_vec1( ; CHECK-NEXT: [[TMP1:%.*]] = icmp slt <2 x i32> [[X:%.*]], ; CHECK-NEXT: [[RES1:%.*]] = select <2 x i1> [[TMP1]], <2 x i32> [[X]], <2 x i32> ; CHECK-NEXT: [[TMP2:%.*]] = trunc <2 x i32> [[RES1]] to <2 x i8> ; CHECK-NEXT: ret <2 x i8> [[TMP2]] ; %cmp = icmp slt <2 x i32> %x, %x_trunc = trunc <2 x i32> %x to <2 x i8> %res = select <2 x i1> %cmp, <2 x i8> %x_trunc, <2 x i8> ret <2 x i8> %res } define <2 x i8> @min_through_cast_vec2(<2 x i32> %x) { ; CHECK-LABEL: @min_through_cast_vec2( ; CHECK-NEXT: [[TMP1:%.*]] = icmp slt <2 x i32> [[X:%.*]], ; CHECK-NEXT: [[RES1:%.*]] = select <2 x i1> [[TMP1]], <2 x i32> [[X]], <2 x i32> ; CHECK-NEXT: [[TMP2:%.*]] = trunc <2 x i32> [[RES1]] to <2 x i8> ; CHECK-NEXT: ret <2 x i8> [[TMP2]] ; %cmp = icmp slt <2 x i32> %x, %x_trunc = trunc <2 x i32> %x to <2 x i8> %res = select <2 x i1> %cmp, <2 x i8> %x_trunc, <2 x i8> ret <2 x i8> %res } ; Remove a min/max op in a sequence with a common operand. ; PR35717: https://bugs.llvm.org/show_bug.cgi?id=35717 ; min(min(a, b), min(b, c)) --> min(min(a, b), c) define i32 @common_factor_smin(i32 %a, i32 %b, i32 %c) { ; CHECK-LABEL: @common_factor_smin( ; CHECK-NEXT: [[CMP_AB:%.*]] = icmp slt i32 [[A:%.*]], [[B:%.*]] ; CHECK-NEXT: [[MIN_AB:%.*]] = select i1 [[CMP_AB]], i32 [[A]], i32 [[B]] ; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i32 [[MIN_AB]], [[C:%.*]] ; CHECK-NEXT: [[MIN_ABC:%.*]] = select i1 [[TMP1]], i32 [[MIN_AB]], i32 [[C]] ; CHECK-NEXT: ret i32 [[MIN_ABC]] ; %cmp_ab = icmp slt i32 %a, %b %min_ab = select i1 %cmp_ab, i32 %a, i32 %b %cmp_bc = icmp slt i32 %b, %c %min_bc = select i1 %cmp_bc, i32 %b, i32 %c %cmp_ab_bc = icmp slt i32 %min_ab, %min_bc %min_abc = select i1 %cmp_ab_bc, i32 %min_ab, i32 %min_bc ret i32 %min_abc } ; max(max(a, b), max(c, b)) --> max(max(a, b), c) define <2 x i32> @common_factor_smax(<2 x i32> %a, <2 x i32> %b, <2 x i32> %c) { ; CHECK-LABEL: @common_factor_smax( ; CHECK-NEXT: [[CMP_AB:%.*]] = icmp sgt <2 x i32> [[A:%.*]], [[B:%.*]] ; CHECK-NEXT: [[MAX_AB:%.*]] = select <2 x i1> [[CMP_AB]], <2 x i32> [[A]], <2 x i32> [[B]] ; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt <2 x i32> [[MAX_AB]], [[C:%.*]] ; CHECK-NEXT: [[MAX_ABC:%.*]] = select <2 x i1> [[TMP1]], <2 x i32> [[MAX_AB]], <2 x i32> [[C]] ; CHECK-NEXT: ret <2 x i32> [[MAX_ABC]] ; %cmp_ab = icmp sgt <2 x i32> %a, %b %max_ab = select <2 x i1> %cmp_ab, <2 x i32> %a, <2 x i32> %b %cmp_cb = icmp sgt <2 x i32> %c, %b %max_cb = select <2 x i1> %cmp_cb, <2 x i32> %c, <2 x i32> %b %cmp_ab_cb = icmp sgt <2 x i32> %max_ab, %max_cb %max_abc = select <2 x i1> %cmp_ab_cb, <2 x i32> %max_ab, <2 x i32> %max_cb ret <2 x i32> %max_abc } ; min(min(b, c), min(a, b)) --> min(min(b, c), a) define <2 x i32> @common_factor_umin(<2 x i32> %a, <2 x i32> %b, <2 x i32> %c) { ; CHECK-LABEL: @common_factor_umin( ; CHECK-NEXT: [[CMP_BC:%.*]] = icmp ult <2 x i32> [[B:%.*]], [[C:%.*]] ; CHECK-NEXT: [[MIN_BC:%.*]] = select <2 x i1> [[CMP_BC]], <2 x i32> [[B]], <2 x i32> [[C]] ; CHECK-NEXT: [[TMP1:%.*]] = icmp ult <2 x i32> [[MIN_BC]], [[A:%.*]] ; CHECK-NEXT: [[MIN_ABC:%.*]] = select <2 x i1> [[TMP1]], <2 x i32> [[MIN_BC]], <2 x i32> [[A]] ; CHECK-NEXT: ret <2 x i32> [[MIN_ABC]] ; %cmp_bc = icmp ult <2 x i32> %b, %c %min_bc = select <2 x i1> %cmp_bc, <2 x i32> %b, <2 x i32> %c %cmp_ab = icmp ult <2 x i32> %a, %b %min_ab = select <2 x i1> %cmp_ab, <2 x i32> %a, <2 x i32> %b %cmp_bc_ab = icmp ult <2 x i32> %min_bc, %min_ab %min_abc = select <2 x i1> %cmp_bc_ab, <2 x i32> %min_bc, <2 x i32> %min_ab ret <2 x i32> %min_abc } ; max(max(b, c), max(b, a)) --> max(max(b, c), a) define i32 @common_factor_umax(i32 %a, i32 %b, i32 %c) { ; CHECK-LABEL: @common_factor_umax( ; CHECK-NEXT: [[CMP_BC:%.*]] = icmp ugt i32 [[B:%.*]], [[C:%.*]] ; CHECK-NEXT: [[MAX_BC:%.*]] = select i1 [[CMP_BC]], i32 [[B]], i32 [[C]] ; CHECK-NEXT: [[TMP1:%.*]] = icmp ugt i32 [[MAX_BC]], [[A:%.*]] ; CHECK-NEXT: [[MAX_ABC:%.*]] = select i1 [[TMP1]], i32 [[MAX_BC]], i32 [[A]] ; CHECK-NEXT: ret i32 [[MAX_ABC]] ; %cmp_bc = icmp ugt i32 %b, %c %max_bc = select i1 %cmp_bc, i32 %b, i32 %c %cmp_ba = icmp ugt i32 %b, %a %max_ba = select i1 %cmp_ba, i32 %b, i32 %a %cmp_bc_ba = icmp ugt i32 %max_bc, %max_ba %max_abc = select i1 %cmp_bc_ba, i32 %max_bc, i32 %max_ba ret i32 %max_abc } declare void @extra_use(i32) define i32 @common_factor_umax_extra_use_lhs(i32 %a, i32 %b, i32 %c) { ; CHECK-LABEL: @common_factor_umax_extra_use_lhs( ; CHECK-NEXT: [[CMP_BC:%.*]] = icmp ugt i32 [[B:%.*]], [[C:%.*]] ; CHECK-NEXT: [[MAX_BC:%.*]] = select i1 [[CMP_BC]], i32 [[B]], i32 [[C]] ; CHECK-NEXT: [[TMP1:%.*]] = icmp ugt i32 [[MAX_BC]], [[A:%.*]] ; CHECK-NEXT: [[MAX_ABC:%.*]] = select i1 [[TMP1]], i32 [[MAX_BC]], i32 [[A]] ; CHECK-NEXT: call void @extra_use(i32 [[MAX_BC]]) ; CHECK-NEXT: ret i32 [[MAX_ABC]] ; %cmp_bc = icmp ugt i32 %b, %c %max_bc = select i1 %cmp_bc, i32 %b, i32 %c %cmp_ba = icmp ugt i32 %b, %a %max_ba = select i1 %cmp_ba, i32 %b, i32 %a %cmp_bc_ba = icmp ugt i32 %max_bc, %max_ba %max_abc = select i1 %cmp_bc_ba, i32 %max_bc, i32 %max_ba call void @extra_use(i32 %max_bc) ret i32 %max_abc } define i32 @common_factor_umax_extra_use_rhs(i32 %a, i32 %b, i32 %c) { ; CHECK-LABEL: @common_factor_umax_extra_use_rhs( ; CHECK-NEXT: [[CMP_BA:%.*]] = icmp ugt i32 [[B:%.*]], [[A:%.*]] ; CHECK-NEXT: [[MAX_BA:%.*]] = select i1 [[CMP_BA]], i32 [[B]], i32 [[A]] ; CHECK-NEXT: [[TMP1:%.*]] = icmp ugt i32 [[MAX_BA]], [[C:%.*]] ; CHECK-NEXT: [[MAX_ABC:%.*]] = select i1 [[TMP1]], i32 [[MAX_BA]], i32 [[C]] ; CHECK-NEXT: call void @extra_use(i32 [[MAX_BA]]) ; CHECK-NEXT: ret i32 [[MAX_ABC]] ; %cmp_bc = icmp ugt i32 %b, %c %max_bc = select i1 %cmp_bc, i32 %b, i32 %c %cmp_ba = icmp ugt i32 %b, %a %max_ba = select i1 %cmp_ba, i32 %b, i32 %a %cmp_bc_ba = icmp ugt i32 %max_bc, %max_ba %max_abc = select i1 %cmp_bc_ba, i32 %max_bc, i32 %max_ba call void @extra_use(i32 %max_ba) ret i32 %max_abc } define i32 @common_factor_umax_extra_use_both(i32 %a, i32 %b, i32 %c) { ; CHECK-LABEL: @common_factor_umax_extra_use_both( ; CHECK-NEXT: [[CMP_BC:%.*]] = icmp ugt i32 [[B:%.*]], [[C:%.*]] ; CHECK-NEXT: [[MAX_BC:%.*]] = select i1 [[CMP_BC]], i32 [[B]], i32 [[C]] ; CHECK-NEXT: [[CMP_BA:%.*]] = icmp ugt i32 [[B]], [[A:%.*]] ; CHECK-NEXT: [[MAX_BA:%.*]] = select i1 [[CMP_BA]], i32 [[B]], i32 [[A]] ; CHECK-NEXT: [[CMP_BC_BA:%.*]] = icmp ugt i32 [[MAX_BC]], [[MAX_BA]] ; CHECK-NEXT: [[MAX_ABC:%.*]] = select i1 [[CMP_BC_BA]], i32 [[MAX_BC]], i32 [[MAX_BA]] ; CHECK-NEXT: call void @extra_use(i32 [[MAX_BC]]) ; CHECK-NEXT: call void @extra_use(i32 [[MAX_BA]]) ; CHECK-NEXT: ret i32 [[MAX_ABC]] ; %cmp_bc = icmp ugt i32 %b, %c %max_bc = select i1 %cmp_bc, i32 %b, i32 %c %cmp_ba = icmp ugt i32 %b, %a %max_ba = select i1 %cmp_ba, i32 %b, i32 %a %cmp_bc_ba = icmp ugt i32 %max_bc, %max_ba %max_abc = select i1 %cmp_bc_ba, i32 %max_bc, i32 %max_ba call void @extra_use(i32 %max_bc) call void @extra_use(i32 %max_ba) ret i32 %max_abc } ; This would assert. Don't assume that earlier min/max types match a possible later min/max. define float @not_min_of_min(i8 %i, float %x) { ; CHECK-LABEL: @not_min_of_min( ; CHECK-NEXT: [[CMP1_INV:%.*]] = fcmp fast oge float [[X:%.*]], 1.000000e+00 ; CHECK-NEXT: [[TMP1:%.*]] = select fast i1 [[CMP1_INV]], float 1.000000e+00, float [[X]] ; CHECK-NEXT: [[CMP2_INV:%.*]] = fcmp fast oge float [[X]], 2.000000e+00 ; CHECK-NEXT: [[TMP2:%.*]] = select fast i1 [[CMP2_INV]], float 2.000000e+00, float [[X]] ; CHECK-NEXT: [[CMP3:%.*]] = icmp ult i8 [[I:%.*]], 16 ; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP3]], float [[TMP1]], float [[TMP2]] ; CHECK-NEXT: ret float [[R]] ; %cmp1 = fcmp fast ult float %x, 1.0 %min1 = select i1 %cmp1, float %x, float 1.0 %cmp2 = fcmp fast ult float %x, 2.0 %min2 = select i1 %cmp2, float %x, float 2.0 %cmp3 = icmp ult i8 %i, 16 %r = select i1 %cmp3, float %min1, float %min2 ret float %r } define i32 @add_umin(i32 %x) { ; CHECK-LABEL: @add_umin( ; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[X:%.*]], 27 ; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i32 [[X]], i32 27 ; CHECK-NEXT: [[R:%.*]] = add nuw nsw i32 [[TMP2]], 15 ; CHECK-NEXT: ret i32 [[R]] ; %a = add nuw i32 %x, 15 %c = icmp ult i32 %a, 42 %r = select i1 %c, i32 %a, i32 42 ret i32 %r } define i32 @add_umin_constant_limit(i32 %x) { ; CHECK-LABEL: @add_umin_constant_limit( ; CHECK-NEXT: [[DOTNOT:%.*]] = icmp eq i32 [[X:%.*]], 0 ; CHECK-NEXT: [[R:%.*]] = select i1 [[DOTNOT]], i32 41, i32 42 ; CHECK-NEXT: ret i32 [[R]] ; %a = add nuw i32 %x, 41 %c = icmp ult i32 %a, 42 %r = select i1 %c, i32 %a, i32 42 ret i32 %r } ; Negative test ; TODO: assert that instsimplify always gets this? define i32 @add_umin_simplify(i32 %x) { ; CHECK-LABEL: @add_umin_simplify( ; CHECK-NEXT: ret i32 42 ; %a = add nuw i32 %x, 42 %c = icmp ult i32 %a, 42 %r = select i1 %c, i32 %a, i32 42 ret i32 %r } ; Negative test ; TODO: assert that instsimplify always gets this? define i32 @add_umin_simplify2(i32 %x) { ; CHECK-LABEL: @add_umin_simplify2( ; CHECK-NEXT: ret i32 42 ; %a = add nuw i32 %x, 43 %c = icmp ult i32 %a, 42 %r = select i1 %c, i32 %a, i32 42 ret i32 %r } ; Negative test define i32 @add_umin_wrong_pred(i32 %x) { ; CHECK-LABEL: @add_umin_wrong_pred( ; CHECK-NEXT: [[A:%.*]] = add nuw i32 [[X:%.*]], 15 ; CHECK-NEXT: [[C:%.*]] = icmp slt i32 [[A]], 42 ; CHECK-NEXT: [[R:%.*]] = select i1 [[C]], i32 [[A]], i32 42 ; CHECK-NEXT: ret i32 [[R]] ; %a = add nuw i32 %x, 15 %c = icmp slt i32 %a, 42 %r = select i1 %c, i32 %a, i32 42 ret i32 %r } ; Negative test define i32 @add_umin_wrong_wrap(i32 %x) { ; CHECK-LABEL: @add_umin_wrong_wrap( ; CHECK-NEXT: [[A:%.*]] = add nsw i32 [[X:%.*]], 15 ; CHECK-NEXT: [[C:%.*]] = icmp ult i32 [[A]], 42 ; CHECK-NEXT: [[R:%.*]] = select i1 [[C]], i32 [[A]], i32 42 ; CHECK-NEXT: ret i32 [[R]] ; %a = add nsw i32 %x, 15 %c = icmp ult i32 %a, 42 %r = select i1 %c, i32 %a, i32 42 ret i32 %r } ; Negative test define i32 @add_umin_extra_use(i32 %x, i32* %p) { ; CHECK-LABEL: @add_umin_extra_use( ; CHECK-NEXT: [[A:%.*]] = add nuw i32 [[X:%.*]], 15 ; CHECK-NEXT: store i32 [[A]], i32* [[P:%.*]], align 4 ; CHECK-NEXT: [[C:%.*]] = icmp ult i32 [[A]], 42 ; CHECK-NEXT: [[R:%.*]] = select i1 [[C]], i32 [[A]], i32 42 ; CHECK-NEXT: ret i32 [[R]] ; %a = add nuw i32 %x, 15 store i32 %a, i32* %p %c = icmp ult i32 %a, 42 %r = select i1 %c, i32 %a, i32 42 ret i32 %r } define <2 x i16> @add_umin_vec(<2 x i16> %x) { ; CHECK-LABEL: @add_umin_vec( ; CHECK-NEXT: [[TMP1:%.*]] = icmp ult <2 x i16> [[X:%.*]], ; CHECK-NEXT: [[TMP2:%.*]] = select <2 x i1> [[TMP1]], <2 x i16> [[X]], <2 x i16> ; CHECK-NEXT: [[R:%.*]] = add nuw nsw <2 x i16> [[TMP2]], ; CHECK-NEXT: ret <2 x i16> [[R]] ; %a = add nuw <2 x i16> %x, %c = icmp ult <2 x i16> %a, %r = select <2 x i1> %c, <2 x i16> %a, <2 x i16> ret <2 x i16> %r } define i37 @add_umax(i37 %x) { ; CHECK-LABEL: @add_umax( ; CHECK-NEXT: [[TMP1:%.*]] = icmp ugt i37 [[X:%.*]], 37 ; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i37 [[X]], i37 37 ; CHECK-NEXT: [[R:%.*]] = add nuw i37 [[TMP2]], 5 ; CHECK-NEXT: ret i37 [[R]] ; %a = add nuw i37 %x, 5 %c = icmp ugt i37 %a, 42 %r = select i1 %c, i37 %a, i37 42 ret i37 %r } define i37 @add_umax_constant_limit(i37 %x) { ; CHECK-LABEL: @add_umax_constant_limit( ; CHECK-NEXT: [[TMP1:%.*]] = icmp ugt i37 [[X:%.*]], 1 ; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i37 [[X]], i37 1 ; CHECK-NEXT: [[R:%.*]] = add nuw i37 [[TMP2]], 81 ; CHECK-NEXT: ret i37 [[R]] ; %a = add nuw i37 %x, 81 %c = icmp ugt i37 %a, 82 %r = select i1 %c, i37 %a, i37 82 ret i37 %r } ; Negative test ; TODO: assert that instsimplify always gets this? define i37 @add_umax_simplify(i37 %x) { ; CHECK-LABEL: @add_umax_simplify( ; CHECK-NEXT: [[A:%.*]] = add i37 [[X:%.*]], 42 ; CHECK-NEXT: ret i37 [[A]] ; %a = add nuw i37 %x, 42 %c = icmp ugt i37 %a, 42 %r = select i1 %c, i37 %a, i37 42 ret i37 %r } ; Negative test ; TODO: assert that instsimplify always gets this? define i32 @add_umax_simplify2(i32 %x) { ; CHECK-LABEL: @add_umax_simplify2( ; CHECK-NEXT: [[A:%.*]] = add nuw i32 [[X:%.*]], 57 ; CHECK-NEXT: ret i32 [[A]] ; %a = add nuw i32 %x, 57 %c = icmp ugt i32 %a, 56 %r = select i1 %c, i32 %a, i32 56 ret i32 %r } ; Negative test define i32 @add_umax_wrong_pred(i32 %x) { ; CHECK-LABEL: @add_umax_wrong_pred( ; CHECK-NEXT: [[A:%.*]] = add nuw i32 [[X:%.*]], 15 ; CHECK-NEXT: [[C:%.*]] = icmp sgt i32 [[A]], 42 ; CHECK-NEXT: [[R:%.*]] = select i1 [[C]], i32 [[A]], i32 42 ; CHECK-NEXT: ret i32 [[R]] ; %a = add nuw i32 %x, 15 %c = icmp sgt i32 %a, 42 %r = select i1 %c, i32 %a, i32 42 ret i32 %r } ; Negative test define i32 @add_umax_wrong_wrap(i32 %x) { ; CHECK-LABEL: @add_umax_wrong_wrap( ; CHECK-NEXT: [[A:%.*]] = add nsw i32 [[X:%.*]], 15 ; CHECK-NEXT: [[C:%.*]] = icmp ugt i32 [[A]], 42 ; CHECK-NEXT: [[R:%.*]] = select i1 [[C]], i32 [[A]], i32 42 ; CHECK-NEXT: ret i32 [[R]] ; %a = add nsw i32 %x, 15 %c = icmp ugt i32 %a, 42 %r = select i1 %c, i32 %a, i32 42 ret i32 %r } ; Negative test define i32 @add_umax_extra_use(i32 %x, i32* %p) { ; CHECK-LABEL: @add_umax_extra_use( ; CHECK-NEXT: [[A:%.*]] = add nuw i32 [[X:%.*]], 15 ; CHECK-NEXT: store i32 [[A]], i32* [[P:%.*]], align 4 ; CHECK-NEXT: [[C:%.*]] = icmp ugt i32 [[A]], 42 ; CHECK-NEXT: [[R:%.*]] = select i1 [[C]], i32 [[A]], i32 42 ; CHECK-NEXT: ret i32 [[R]] ; %a = add nuw i32 %x, 15 store i32 %a, i32* %p %c = icmp ugt i32 %a, 42 %r = select i1 %c, i32 %a, i32 42 ret i32 %r } define <2 x i33> @add_umax_vec(<2 x i33> %x) { ; CHECK-LABEL: @add_umax_vec( ; CHECK-NEXT: [[TMP1:%.*]] = icmp ugt <2 x i33> [[X:%.*]], ; CHECK-NEXT: [[TMP2:%.*]] = select <2 x i1> [[TMP1]], <2 x i33> [[X]], <2 x i33> ; CHECK-NEXT: [[R:%.*]] = add nuw <2 x i33> [[TMP2]], ; CHECK-NEXT: ret <2 x i33> [[R]] ; %a = add nuw <2 x i33> %x, %c = icmp ugt <2 x i33> %a, %r = select <2 x i1> %c, <2 x i33> %a, <2 x i33> ret <2 x i33> %r } define i8 @PR14613_umin(i8 %x) { ; CHECK-LABEL: @PR14613_umin( ; CHECK-NEXT: [[TMP1:%.*]] = call i8 @llvm.uadd.sat.i8(i8 [[X:%.*]], i8 15) ; CHECK-NEXT: ret i8 [[TMP1]] ; %u4 = zext i8 %x to i32 %u5 = add nuw nsw i32 %u4, 15 %u6 = icmp ult i32 %u5, 255 %u7 = select i1 %u6, i32 %u5, i32 255 %r = trunc i32 %u7 to i8 ret i8 %r } define i8 @PR14613_umax(i8 %x) { ; CHECK-LABEL: @PR14613_umax( ; CHECK-NEXT: [[TMP1:%.*]] = icmp ugt i8 [[X:%.*]], -16 ; CHECK-NEXT: [[X_OP:%.*]] = add i8 [[X]], 15 ; CHECK-NEXT: [[U7:%.*]] = select i1 [[TMP1]], i8 [[X_OP]], i8 -1 ; CHECK-NEXT: ret i8 [[U7]] ; %u4 = zext i8 %x to i32 %u5 = add nuw nsw i32 %u4, 15 %u6 = icmp ugt i32 %u5, 255 %u7 = select i1 %u6, i32 %u5, i32 255 %r = trunc i32 %u7 to i8 ret i8 %r } define i32 @add_smin(i32 %x) { ; CHECK-LABEL: @add_smin( ; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i32 [[X:%.*]], 27 ; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i32 [[X]], i32 27 ; CHECK-NEXT: [[R:%.*]] = add nsw i32 [[TMP2]], 15 ; CHECK-NEXT: ret i32 [[R]] ; %a = add nsw i32 %x, 15 %c = icmp slt i32 %a, 42 %r = select i1 %c, i32 %a, i32 42 ret i32 %r } define i32 @add_smin_constant_limit(i32 %x) { ; CHECK-LABEL: @add_smin_constant_limit( ; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i32 [[X:%.*]], 2147483646 ; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i32 [[X]], i32 2147483646 ; CHECK-NEXT: [[R:%.*]] = add nsw i32 [[TMP2]], -3 ; CHECK-NEXT: ret i32 [[R]] ; %a = add nsw i32 %x, -3 %c = icmp slt i32 %a, 2147483643 %r = select i1 %c, i32 %a, i32 2147483643 ret i32 %r } ; Negative test ; TODO: assert that instsimplify always gets this? define i32 @add_smin_simplify(i32 %x) { ; CHECK-LABEL: @add_smin_simplify( ; CHECK-NEXT: [[R:%.*]] = add nsw i32 [[X:%.*]], -3 ; CHECK-NEXT: ret i32 [[R]] ; %a = add nsw i32 %x, -3 %c = icmp slt i32 %a, 2147483644 %r = select i1 %c, i32 %a, i32 2147483644 ret i32 %r } ; Negative test ; TODO: assert that instsimplify always gets this? define i32 @add_smin_simplify2(i32 %x) { ; CHECK-LABEL: @add_smin_simplify2( ; CHECK-NEXT: [[A:%.*]] = add nsw i32 [[X:%.*]], -3 ; CHECK-NEXT: ret i32 [[A]] ; %a = add nsw i32 %x, -3 %c = icmp slt i32 %a, 2147483645 %r = select i1 %c, i32 %a, i32 2147483645 ret i32 %r } ; Negative test define i32 @add_smin_wrong_pred(i32 %x) { ; CHECK-LABEL: @add_smin_wrong_pred( ; CHECK-NEXT: [[A:%.*]] = add nsw i32 [[X:%.*]], 15 ; CHECK-NEXT: [[C:%.*]] = icmp ult i32 [[A]], 42 ; CHECK-NEXT: [[R:%.*]] = select i1 [[C]], i32 [[A]], i32 42 ; CHECK-NEXT: ret i32 [[R]] ; %a = add nsw i32 %x, 15 %c = icmp ult i32 %a, 42 %r = select i1 %c, i32 %a, i32 42 ret i32 %r } ; Negative test define i32 @add_smin_wrong_wrap(i32 %x) { ; CHECK-LABEL: @add_smin_wrong_wrap( ; CHECK-NEXT: [[A:%.*]] = add nuw i32 [[X:%.*]], 15 ; CHECK-NEXT: [[C:%.*]] = icmp slt i32 [[A]], 42 ; CHECK-NEXT: [[R:%.*]] = select i1 [[C]], i32 [[A]], i32 42 ; CHECK-NEXT: ret i32 [[R]] ; %a = add nuw i32 %x, 15 %c = icmp slt i32 %a, 42 %r = select i1 %c, i32 %a, i32 42 ret i32 %r } ; Negative test define i32 @add_smin_extra_use(i32 %x, i32* %p) { ; CHECK-LABEL: @add_smin_extra_use( ; CHECK-NEXT: [[A:%.*]] = add nsw i32 [[X:%.*]], 15 ; CHECK-NEXT: store i32 [[A]], i32* [[P:%.*]], align 4 ; CHECK-NEXT: [[C:%.*]] = icmp slt i32 [[A]], 42 ; CHECK-NEXT: [[R:%.*]] = select i1 [[C]], i32 [[A]], i32 42 ; CHECK-NEXT: ret i32 [[R]] ; %a = add nsw i32 %x, 15 store i32 %a, i32* %p %c = icmp slt i32 %a, 42 %r = select i1 %c, i32 %a, i32 42 ret i32 %r } define <2 x i16> @add_smin_vec(<2 x i16> %x) { ; CHECK-LABEL: @add_smin_vec( ; CHECK-NEXT: [[TMP1:%.*]] = icmp slt <2 x i16> [[X:%.*]], ; CHECK-NEXT: [[TMP2:%.*]] = select <2 x i1> [[TMP1]], <2 x i16> [[X]], <2 x i16> ; CHECK-NEXT: [[R:%.*]] = add nsw <2 x i16> [[TMP2]], ; CHECK-NEXT: ret <2 x i16> [[R]] ; %a = add nsw <2 x i16> %x, %c = icmp slt <2 x i16> %a, %r = select <2 x i1> %c, <2 x i16> %a, <2 x i16> ret <2 x i16> %r } define i37 @add_smax(i37 %x) { ; CHECK-LABEL: @add_smax( ; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i37 [[X:%.*]], 37 ; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i37 [[X]], i37 37 ; CHECK-NEXT: [[R:%.*]] = add nuw nsw i37 [[TMP2]], 5 ; CHECK-NEXT: ret i37 [[R]] ; %a = add nsw i37 %x, 5 %c = icmp sgt i37 %a, 42 %r = select i1 %c, i37 %a, i37 42 ret i37 %r } define i8 @add_smax_constant_limit(i8 %x) { ; CHECK-LABEL: @add_smax_constant_limit( ; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i8 [[X:%.*]], -127 ; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[TMP1]], i8 [[X]], i8 -127 ; CHECK-NEXT: [[R:%.*]] = add nsw i8 [[TMP2]], 125 ; CHECK-NEXT: ret i8 [[R]] ; %a = add nsw i8 %x, 125 %c = icmp sgt i8 %a, -2 %r = select i1 %c, i8 %a, i8 -2 ret i8 %r } ; Negative test ; TODO: assert that instsimplify always gets this? define i8 @add_smax_simplify(i8 %x) { ; CHECK-LABEL: @add_smax_simplify( ; CHECK-NEXT: [[R:%.*]] = add nsw i8 [[X:%.*]], 126 ; CHECK-NEXT: ret i8 [[R]] ; %a = add nsw i8 %x, 126 %c = icmp sgt i8 %a, -2 %r = select i1 %c, i8 %a, i8 -2 ret i8 %r } ; Negative test ; TODO: assert that instsimplify always gets this? define i8 @add_smax_simplify2(i8 %x) { ; CHECK-LABEL: @add_smax_simplify2( ; CHECK-NEXT: [[A:%.*]] = add nsw i8 [[X:%.*]], 127 ; CHECK-NEXT: ret i8 [[A]] ; %a = add nsw i8 %x, 127 %c = icmp sgt i8 %a, -2 %r = select i1 %c, i8 %a, i8 -2 ret i8 %r } ; Negative test define i32 @add_smax_wrong_pred(i32 %x) { ; CHECK-LABEL: @add_smax_wrong_pred( ; CHECK-NEXT: [[A:%.*]] = add nsw i32 [[X:%.*]], 15 ; CHECK-NEXT: [[C:%.*]] = icmp ugt i32 [[A]], 42 ; CHECK-NEXT: [[R:%.*]] = select i1 [[C]], i32 [[A]], i32 42 ; CHECK-NEXT: ret i32 [[R]] ; %a = add nsw i32 %x, 15 %c = icmp ugt i32 %a, 42 %r = select i1 %c, i32 %a, i32 42 ret i32 %r } ; Negative test define i32 @add_smax_wrong_wrap(i32 %x) { ; CHECK-LABEL: @add_smax_wrong_wrap( ; CHECK-NEXT: [[A:%.*]] = add nuw i32 [[X:%.*]], 15 ; CHECK-NEXT: [[C:%.*]] = icmp sgt i32 [[A]], 42 ; CHECK-NEXT: [[R:%.*]] = select i1 [[C]], i32 [[A]], i32 42 ; CHECK-NEXT: ret i32 [[R]] ; %a = add nuw i32 %x, 15 %c = icmp sgt i32 %a, 42 %r = select i1 %c, i32 %a, i32 42 ret i32 %r } ; Negative test define i32 @add_smax_extra_use(i32 %x, i32* %p) { ; CHECK-LABEL: @add_smax_extra_use( ; CHECK-NEXT: [[A:%.*]] = add nsw i32 [[X:%.*]], 15 ; CHECK-NEXT: store i32 [[A]], i32* [[P:%.*]], align 4 ; CHECK-NEXT: [[C:%.*]] = icmp sgt i32 [[A]], 42 ; CHECK-NEXT: [[R:%.*]] = select i1 [[C]], i32 [[A]], i32 42 ; CHECK-NEXT: ret i32 [[R]] ; %a = add nsw i32 %x, 15 store i32 %a, i32* %p %c = icmp sgt i32 %a, 42 %r = select i1 %c, i32 %a, i32 42 ret i32 %r } define <2 x i33> @add_smax_vec(<2 x i33> %x) { ; CHECK-LABEL: @add_smax_vec( ; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt <2 x i33> [[X:%.*]], ; CHECK-NEXT: [[TMP2:%.*]] = select <2 x i1> [[TMP1]], <2 x i33> [[X]], <2 x i33> ; CHECK-NEXT: [[R:%.*]] = add nuw nsw <2 x i33> [[TMP2]], ; CHECK-NEXT: ret <2 x i33> [[R]] ; %a = add nsw <2 x i33> %x, %c = icmp sgt <2 x i33> %a, %r = select <2 x i1> %c, <2 x i33> %a, <2 x i33> ret <2 x i33> %r } define i8 @PR14613_smin(i8 %x) { ; CHECK-LABEL: @PR14613_smin( ; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i8 [[X:%.*]], 40 ; CHECK-NEXT: [[X_OP:%.*]] = add i8 [[X]], 15 ; CHECK-NEXT: [[U7:%.*]] = select i1 [[TMP1]], i8 [[X_OP]], i8 55 ; CHECK-NEXT: ret i8 [[U7]] ; %u4 = sext i8 %x to i32 %u5 = add nuw nsw i32 %u4, 15 %u6 = icmp slt i32 %u5, 55 %u7 = select i1 %u6, i32 %u5, i32 55 %r = trunc i32 %u7 to i8 ret i8 %r } define i8 @PR14613_smax(i8 %x) { ; CHECK-LABEL: @PR14613_smax( ; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i8 [[X:%.*]], 40 ; CHECK-NEXT: [[X_OP:%.*]] = add i8 [[X]], 15 ; CHECK-NEXT: [[U7:%.*]] = select i1 [[TMP1]], i8 [[X_OP]], i8 55 ; CHECK-NEXT: ret i8 [[U7]] ; %u4 = sext i8 %x to i32 %u5 = add nuw nsw i32 %u4, 15 %u6 = icmp sgt i32 %u5, 55 %u7 = select i1 %u6, i32 %u5, i32 55 %r = trunc i32 %u7 to i8 ret i8 %r } define i8 @PR46271(<2 x i8> %x) { ; CHECK-LABEL: @PR46271( ; CHECK-NEXT: [[A:%.*]] = icmp sgt <2 x i8> [[X:%.*]], ; CHECK-NEXT: [[B:%.*]] = select <2 x i1> [[A]], <2 x i8> [[X]], <2 x i8> ; CHECK-NEXT: [[TMP1:%.*]] = extractelement <2 x i8> [[B]], i32 1 ; CHECK-NEXT: [[R:%.*]] = xor i8 [[TMP1]], -1 ; CHECK-NEXT: ret i8 [[R]] ; %a = icmp sgt <2 x i8> %x, %b = select <2 x i1> %a, <2 x i8> %x, <2 x i8> %not = xor <2 x i8> %b, %r = extractelement <2 x i8> %not, i32 1 ret i8 %r }