; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt < %s -instcombine -S | FileCheck %s declare void @use(<2 x i1>) declare void @use2(i1) define i32 @select_xor_icmp(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_xor_icmp( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[Z:%.*]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, 0 %B = xor i32 %x, %z %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_xor_icmp2(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_xor_icmp2( ; CHECK-NEXT: [[A_NOT:%.*]] = icmp eq i32 [[X:%.*]], 0 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A_NOT]], i32 [[Z:%.*]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp ne i32 %x, 0 %B = xor i32 %x, %z %C = select i1 %A, i32 %y, i32 %B ret i32 %C } define i32 @select_xor_icmp_meta(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_xor_icmp_meta( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[Z:%.*]], i32 [[Y:%.*]], !prof !0 ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, 0 %B = xor i32 %x, %z %C = select i1 %A, i32 %B, i32 %y, !prof !0 ret i32 %C } define i32 @select_mul_icmp(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_mul_icmp( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 1 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[Z:%.*]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, 1 %B = mul i32 %x, %z %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_add_icmp(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_add_icmp( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[Z:%.*]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, 0 %B = add i32 %x, %z %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_or_icmp(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_or_icmp( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[Z:%.*]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, 0 %B = or i32 %x, %z %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_and_icmp(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_and_icmp( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], -1 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[Z:%.*]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, -1 %B = and i32 %x, %z %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define <2 x i8> @select_xor_icmp_vec(<2 x i8> %x, <2 x i8> %y, <2 x i8> %z) { ; CHECK-LABEL: @select_xor_icmp_vec( ; CHECK-NEXT: [[A:%.*]] = icmp eq <2 x i8> [[X:%.*]], zeroinitializer ; CHECK-NEXT: [[C:%.*]] = select <2 x i1> [[A]], <2 x i8> [[Z:%.*]], <2 x i8> [[Y:%.*]] ; CHECK-NEXT: ret <2 x i8> [[C]] ; %A = icmp eq <2 x i8> %x, %B = xor <2 x i8> %x, %z %C = select <2 x i1> %A, <2 x i8> %B, <2 x i8> %y ret <2 x i8> %C } define <2 x i8> @select_xor_icmp_vec_use(<2 x i8> %x, <2 x i8> %y, <2 x i8> %z) { ; CHECK-LABEL: @select_xor_icmp_vec_use( ; CHECK-NEXT: [[A:%.*]] = icmp ne <2 x i8> [[X:%.*]], zeroinitializer ; CHECK-NEXT: call void @use(<2 x i1> [[A]]) ; CHECK-NEXT: [[C:%.*]] = select <2 x i1> [[A]], <2 x i8> [[Y:%.*]], <2 x i8> [[Z:%.*]] ; CHECK-NEXT: ret <2 x i8> [[C]] ; %A = icmp ne <2 x i8> %x, call void @use(<2 x i1> %A) %B = xor <2 x i8> %x, %z %C = select <2 x i1> %A, <2 x i8> %y, <2 x i8> %B ret <2 x i8> %C } define i32 @select_xor_inv_icmp(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_xor_inv_icmp( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[Z:%.*]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, 0 %B = xor i32 %z, %x %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_xor_inv_icmp2(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_xor_inv_icmp2( ; CHECK-NEXT: [[A:%.*]] = icmp ne i32 [[X:%.*]], 0 ; CHECK-NEXT: call void @use2(i1 [[A]]) ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[Y:%.*]], i32 [[Z:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp ne i32 %x, 0 call void @use2(i1 %A) ; thwart predicate canonicalization %B = xor i32 %x, %z %C = select i1 %A, i32 %y, i32 %B ret i32 %C } define float @select_fadd_fcmp(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fadd_fcmp( ; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[Z:%.*]], float [[Y:%.*]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp oeq float %x, -0.0 %B = fadd nsz float %x, %z %C = select i1 %A, float %B, float %y ret float %C } ; This is logically equivalent to the previous test - fcmp ignores the sign of 0.0. define float @select_fadd_fcmp_poszero(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fadd_fcmp_poszero( ; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[Z:%.*]], float [[Y:%.*]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp oeq float %x, 0.0 %B = fadd nsz float %z, %x %C = select i1 %A, float %B, float %y ret float %C } define float @select_fadd_fcmp_2(float %x, float %y, float %v) { ; CHECK-LABEL: @select_fadd_fcmp_2( ; CHECK-NEXT: [[A:%.*]] = fcmp une float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[Z:%.*]] = fadd float [[V:%.*]], 0.000000e+00 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[Y:%.*]], float [[Z]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp une float %x, -0.0 %z = fadd float %v, 0.0 ; cannot produce -0.0 %B = fadd float %z, %x %C = select i1 %A, float %y, float %B ret float %C } ; This is logically equivalent to the previous test - fcmp ignores the sign of 0.0. define float @select_fadd_fcmp_2_poszero(float %x, float %y, float %v) { ; CHECK-LABEL: @select_fadd_fcmp_2_poszero( ; CHECK-NEXT: [[A:%.*]] = fcmp une float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[Z:%.*]] = fadd float [[V:%.*]], 0.000000e+00 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[Y:%.*]], float [[Z]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp une float %x, 0.0 %z = fadd float %v, 0.0 ; cannot produce -0.0 %B = fadd float %z, %x %C = select i1 %A, float %y, float %B ret float %C } define float @select_fadd_fcmp_3(float %x, float %y) { ; CHECK-LABEL: @select_fadd_fcmp_3( ; CHECK-NEXT: [[A:%.*]] = fcmp une float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[Y:%.*]], float 6.000000e+00 ; CHECK-NEXT: ret float [[C]] ; %A = fcmp une float %x, -0.0 %B = fadd float 6.0, %x %C = select i1 %A, float %y, float %B ret float %C } ; This is logically equivalent to the previous test - fcmp ignores the sign of 0.0. define float @select_fadd_fcmp_3_poszero(float %x, float %y) { ; CHECK-LABEL: @select_fadd_fcmp_3_poszero( ; CHECK-NEXT: [[A:%.*]] = fcmp une float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[Y:%.*]], float 6.000000e+00 ; CHECK-NEXT: ret float [[C]] ; %A = fcmp une float %x, 0.0 %B = fadd float 6.0, %x %C = select i1 %A, float %y, float %B ret float %C } define float @select_fadd_fcmp_4(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fadd_fcmp_4( ; CHECK-NEXT: [[A:%.*]] = fcmp une float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[Y:%.*]], float [[Z:%.*]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp une float %x, -0.0 %B = fadd nsz float %z, %x %C = select i1 %A, float %y, float %B ret float %C } ; This is logically equivalent to the previous test - fcmp ignores the sign of 0.0. define float @select_fadd_fcmp_4_poszero(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fadd_fcmp_4_poszero( ; CHECK-NEXT: [[A:%.*]] = fcmp une float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[Y:%.*]], float [[Z:%.*]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp une float %x, 0.0 %B = fadd nsz float %z, %x %C = select i1 %A, float %y, float %B ret float %C } define float @select_fadd_fcmp_5(float %x, float %y, float %v) { ; CHECK-LABEL: @select_fadd_fcmp_5( ; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[Z:%.*]] = fadd float [[V:%.*]], 0.000000e+00 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[Z]], float [[Y:%.*]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp oeq float %x, -0.0 %z = fadd float %v, 0.0 ; cannot produce -0.0 %B = fadd float %z, %x %C = select i1 %A, float %B, float %y ret float %C } ; This is logically equivalent to the previous test - fcmp ignores the sign of 0.0. define float @select_fadd_fcmp_5_poszero(float %x, float %y, float %v) { ; CHECK-LABEL: @select_fadd_fcmp_5_poszero( ; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[Z:%.*]] = fadd float [[V:%.*]], 0.000000e+00 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[Z]], float [[Y:%.*]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp oeq float %x, 0.0 %z = fadd float %v, 0.0 ; cannot produce -0.0 %B = fadd float %z, %x %C = select i1 %A, float %B, float %y ret float %C } define float @select_fadd_fcmp_6(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fadd_fcmp_6( ; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float 6.000000e+00, float [[Y:%.*]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp oeq float %x, -0.0 %B = fadd float %x, 6.0 %C = select i1 %A, float %B, float %y ret float %C } ; This is logically equivalent to the previous test - fcmp ignores the sign of 0.0. define float @select_fadd_fcmp_6_poszero(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fadd_fcmp_6_poszero( ; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float 6.000000e+00, float [[Y:%.*]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp oeq float %x, 0.0 %B = fadd float %x, 6.0 %C = select i1 %A, float %B, float %y ret float %C } define float @select_fmul_fcmp(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fmul_fcmp( ; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 1.000000e+00 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[Z:%.*]], float [[Y:%.*]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp oeq float %x, 1.0 %B = fmul nsz float %x, %z %C = select i1 %A, float %B, float %y ret float %C } define float @select_fsub_fcmp(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fsub_fcmp( ; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[Z:%.*]], float [[Y:%.*]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp oeq float %x, 0.0 %B = fsub nsz float %z, %x %C = select i1 %A, float %B, float %y ret float %C } ; This is logically equivalent to the previous test - fcmp ignores the sign of 0.0. define float @select_fsub_fcmp_negzero(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fsub_fcmp_negzero( ; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[Z:%.*]], float [[Y:%.*]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp oeq float %x, -0.0 %B = fsub nsz float %z, %x %C = select i1 %A, float %B, float %y ret float %C } define float @select_fdiv_fcmp(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fdiv_fcmp( ; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 1.000000e+00 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[Z:%.*]], float [[Y:%.*]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp oeq float %x, 1.0 %B = fdiv nsz float %z, %x %C = select i1 %A, float %B, float %y ret float %C } define i32 @select_sub_icmp(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_sub_icmp( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[Z:%.*]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, 0 %B = sub i32 %z, %x %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_sub_icmp_2(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_sub_icmp_2( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0 ; CHECK-NEXT: call void @use2(i1 [[A]]) ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[Z:%.*]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, 0 call void @use2(i1 %A) %B = sub i32 %z, %x %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_sub_icmp_3(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_sub_icmp_3( ; CHECK-NEXT: [[A:%.*]] = icmp ne i32 [[X:%.*]], 0 ; CHECK-NEXT: call void @use2(i1 [[A]]) ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[Y:%.*]], i32 [[Z:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp ne i32 %x, 0 call void @use2(i1 %A) %B = sub i32 %z, %x %C = select i1 %A, i32 %y, i32 %B ret i32 %C } define <2 x i8> @select_sub_icmp_vec(<2 x i8> %x, <2 x i8> %y, <2 x i8> %z) { ; CHECK-LABEL: @select_sub_icmp_vec( ; CHECK-NEXT: [[A:%.*]] = icmp eq <2 x i8> [[X:%.*]], zeroinitializer ; CHECK-NEXT: [[C:%.*]] = select <2 x i1> [[A]], <2 x i8> [[Z:%.*]], <2 x i8> [[Y:%.*]] ; CHECK-NEXT: ret <2 x i8> [[C]] ; %A = icmp eq <2 x i8> %x, %B = sub <2 x i8> %z, %x %C = select <2 x i1> %A, <2 x i8> %B, <2 x i8> %y ret <2 x i8> %C } define i32 @select_shl_icmp(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_shl_icmp( ; CHECK-NEXT: [[A:%.*]] = icmp ne i32 [[X:%.*]], 0 ; CHECK-NEXT: call void @use2(i1 [[A]]) ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[Y:%.*]], i32 [[Z:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp ne i32 %x, 0 call void @use2(i1 %A) ; thwart predicate canonicalization %B = shl i32 %z, %x %C = select i1 %A, i32 %y, i32 %B ret i32 %C } define i32 @select_lshr_icmp(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_lshr_icmp( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[Z:%.*]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, 0 %B = lshr i32 %z, %x %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_ashr_icmp(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_ashr_icmp( ; CHECK-NEXT: [[A:%.*]] = icmp ne i32 [[X:%.*]], 0 ; CHECK-NEXT: call void @use2(i1 [[A]]) ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[Y:%.*]], i32 [[Z:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp ne i32 %x, 0 call void @use2(i1 %A) ; thwart predicate canonicalization %B = ashr i32 %z, %x %C = select i1 %A, i32 %y, i32 %B ret i32 %C } define i32 @select_udiv_icmp(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_udiv_icmp( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 1 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[Z:%.*]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, 1 %B = udiv i32 %z, %x %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_sdiv_icmp(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_sdiv_icmp( ; CHECK-NEXT: [[A:%.*]] = icmp ne i32 [[X:%.*]], 1 ; CHECK-NEXT: call void @use2(i1 [[A]]) ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[Y:%.*]], i32 [[Z:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp ne i32 %x, 1 call void @use2(i1 %A) ; thwart predicate canonicalization %B = sdiv i32 %z, %x %C = select i1 %A, i32 %y, i32 %B ret i32 %C } ; Negative tests define i32 @select_xor_icmp_bad_1(i32 %x, i32 %y, i32 %z, i32 %k) { ; CHECK-LABEL: @select_xor_icmp_bad_1( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], [[K:%.*]] ; CHECK-NEXT: [[B:%.*]] = xor i32 [[X]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, %k %B = xor i32 %x, %z %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_xor_icmp_bad_2(i32 %x, i32 %y, i32 %z, i32 %k) { ; CHECK-LABEL: @select_xor_icmp_bad_2( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0 ; CHECK-NEXT: [[B:%.*]] = xor i32 [[K:%.*]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, 0 %B = xor i32 %k, %z %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_xor_icmp_bad_3(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_xor_icmp_bad_3( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 3 ; CHECK-NEXT: [[B:%.*]] = xor i32 [[X]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, 3 %B = xor i32 %x, %z %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_xor_fcmp_bad_4(i32 %x, i32 %y, i32 %z, float %k) { ; CHECK-LABEL: @select_xor_fcmp_bad_4( ; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[K:%.*]], 0.000000e+00 ; CHECK-NEXT: [[B:%.*]] = xor i32 [[X:%.*]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = fcmp oeq float %k, 0.0 %B = xor i32 %x, %z %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_xor_icmp_bad_5(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_xor_icmp_bad_5( ; CHECK-NEXT: [[A_NOT:%.*]] = icmp eq i32 [[X:%.*]], 0 ; CHECK-NEXT: [[B:%.*]] = xor i32 [[X]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A_NOT]], i32 [[Y:%.*]], i32 [[B]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp ne i32 %x, 0 %B = xor i32 %x, %z %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_xor_icmp_bad_6(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_xor_icmp_bad_6( ; CHECK-NEXT: [[A_NOT:%.*]] = icmp eq i32 [[X:%.*]], 1 ; CHECK-NEXT: [[B:%.*]] = xor i32 [[X]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A_NOT]], i32 [[B]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp ne i32 %x, 1 %B = xor i32 %x, %z %C = select i1 %A, i32 %y, i32 %B ret i32 %C } define <2 x i8> @select_xor_icmp_vec_bad(<2 x i8> %x, <2 x i8> %y, <2 x i8> %z) { ; CHECK-LABEL: @select_xor_icmp_vec_bad( ; CHECK-NEXT: [[A:%.*]] = icmp eq <2 x i8> [[X:%.*]], ; CHECK-NEXT: [[B:%.*]] = xor <2 x i8> [[X]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select <2 x i1> [[A]], <2 x i8> [[B]], <2 x i8> [[Y:%.*]] ; CHECK-NEXT: ret <2 x i8> [[C]] ; %A = icmp eq <2 x i8> %x, %B = xor <2 x i8> %x, %z %C = select <2 x i1> %A, <2 x i8> %B, <2 x i8> %y ret <2 x i8> %C } ; Folding this would only be legal if we sanitized undef to 0. define <2 x i8> @select_xor_icmp_vec_undef(<2 x i8> %x, <2 x i8> %y, <2 x i8> %z) { ; CHECK-LABEL: @select_xor_icmp_vec_undef( ; CHECK-NEXT: [[A:%.*]] = icmp eq <2 x i8> [[X:%.*]], ; CHECK-NEXT: [[B:%.*]] = xor <2 x i8> [[X]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select <2 x i1> [[A]], <2 x i8> [[B]], <2 x i8> [[Y:%.*]] ; CHECK-NEXT: ret <2 x i8> [[C]] ; %A = icmp eq <2 x i8> %x, %B = xor <2 x i8> %x, %z %C = select <2 x i1> %A, <2 x i8> %B, <2 x i8> %y ret <2 x i8> %C } define i32 @select_mul_icmp_bad(i32 %x, i32 %y, i32 %z, i32 %k) { ; CHECK-LABEL: @select_mul_icmp_bad( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 3 ; CHECK-NEXT: [[B:%.*]] = mul i32 [[X]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, 3 %B = mul i32 %x, %z %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_add_icmp_bad(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_add_icmp_bad( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 1 ; CHECK-NEXT: [[B:%.*]] = add i32 [[X]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, 1 %B = add i32 %x, %z %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_and_icmp_zero(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_and_icmp_zero( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 0, i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, 0 %B = and i32 %x, %z %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_or_icmp_bad(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_or_icmp_bad( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 3 ; CHECK-NEXT: [[B:%.*]] = or i32 [[X]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, 3 %B = or i32 %x, %z %C = select i1 %A, i32 %B, i32 %y ret i32 %C } ; Invalid identity constant for FP op define float @select_fadd_fcmp_bad(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fadd_fcmp_bad( ; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], -1.000000e+00 ; CHECK-NEXT: [[B:%.*]] = fadd nsz float [[X]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp oeq float %x, -1.0 %B = fadd nsz float %x, %z %C = select i1 %A, float %B, float %y ret float %C } ; Invalid comparison type define float @select_fadd_fcmp_bad_2(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fadd_fcmp_bad_2( ; CHECK-NEXT: [[A:%.*]] = fcmp ueq float [[X:%.*]], -1.000000e+00 ; CHECK-NEXT: [[B:%.*]] = fadd float [[X]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp ueq float %x, -1.0 %B = fadd float %x, %z %C = select i1 %A, float %B, float %y ret float %C } ; Invalid comparison type define float @select_fadd_fcmp_bad_3(float %x, float %y, float %z, float %k) { ; CHECK-LABEL: @select_fadd_fcmp_bad_3( ; CHECK-NEXT: [[A:%.*]] = fcmp one float [[X:%.*]], [[K:%.*]] ; CHECK-NEXT: [[B:%.*]] = fadd float [[X]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[Y:%.*]], float [[B]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp one float %x, %k %B = fadd float %x, %z %C = select i1 %A, float %y, float %B ret float %C } ; Invalid order of operands of select define float @select_fadd_fcmp_bad_4(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fadd_fcmp_bad_4( ; CHECK-NEXT: [[A:%.*]] = fcmp une float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[B:%.*]] = fadd float [[X]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp une float %x, -0.0 %B = fadd float %x, %z %C = select i1 %A, float %B, float %y ret float %C } ; Invalid comparison type define float @select_fadd_fcmp_bad_5(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fadd_fcmp_bad_5( ; CHECK-NEXT: [[A:%.*]] = fcmp one float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[B:%.*]] = fadd nsz float [[Z:%.*]], [[X]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[Y:%.*]], float [[B]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp one float %x, -0.0 %B = fadd nsz float %z, %x %C = select i1 %A, float %y, float %B ret float %C } ; Invalid order of operands of select define float @select_fadd_fcmp_bad_6(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fadd_fcmp_bad_6( ; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[B:%.*]] = fadd nsz float [[Z:%.*]], [[X]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[Y:%.*]], float [[B]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp oeq float %x, -0.0 %B = fadd nsz float %z, %x %C = select i1 %A, float %y, float %B ret float %C } ; Do not transform if we have signed zeros and if Z is possibly negative zero define float @select_fadd_fcmp_bad_7(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fadd_fcmp_bad_7( ; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[B:%.*]] = fadd float [[X]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp oeq float %x, -0.0 %B = fadd float %x, %z %C = select i1 %A, float %B, float %y ret float %C } ; Invalid comparison type define float @select_fadd_fcmp_bad_8(float %x, float %y, float %v) { ; CHECK-LABEL: @select_fadd_fcmp_bad_8( ; CHECK-NEXT: [[A:%.*]] = fcmp one float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[Z:%.*]] = fadd float [[V:%.*]], -1.000000e+00 ; CHECK-NEXT: [[B:%.*]] = fadd float [[Z]], [[X]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[Y:%.*]], float [[B]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp one float %x, -0.0 %z = fadd float %v, -1.0 %B = fadd float %z, %x %C = select i1 %A, float %y, float %B ret float %C } ; Invalid comparison type define float @select_fadd_fcmp_bad_9(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fadd_fcmp_bad_9( ; CHECK-NEXT: [[A:%.*]] = fcmp one float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[B:%.*]] = fadd nsz float [[Z:%.*]], [[X]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[Y:%.*]], float [[B]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp one float %x, -0.0 %B = fadd nsz float %z, %x %C = select i1 %A, float %y, float %B ret float %C } ; Invalid comparison type define float @select_fadd_fcmp_bad_10(float %x, float %y, float %v) { ; CHECK-LABEL: @select_fadd_fcmp_bad_10( ; CHECK-NEXT: [[A:%.*]] = fcmp one float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[Z:%.*]] = fadd float [[V:%.*]], 0.000000e+00 ; CHECK-NEXT: [[B:%.*]] = fadd float [[Z]], [[X]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[Y:%.*]], float [[B]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp one float %x, -0.0 %z = fadd float %v, 0.0 ; cannot produce -0.0 %B = fadd float %z, %x %C = select i1 %A, float %y, float %B ret float %C } ; Do not transform if Z is possibly negative zero define float @select_fadd_fcmp_bad_11(float %x, float %y, float %v) { ; CHECK-LABEL: @select_fadd_fcmp_bad_11( ; CHECK-NEXT: [[A:%.*]] = fcmp une float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[Z:%.*]] = fadd float [[V:%.*]], -1.000000e+00 ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[Y:%.*]], float [[Z]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp une float %x, -0.0 %z = fadd float %v, -1.0 %B = fadd nsz float %z, %x %C = select i1 %A, float %y, float %B ret float %C } ; Do not transform if we have signed zeros and if Z is possibly negative zero define float @select_fadd_fcmp_bad_12(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fadd_fcmp_bad_12( ; CHECK-NEXT: [[A:%.*]] = fcmp une float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[B:%.*]] = fadd float [[Z:%.*]], [[X]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[Y:%.*]], float [[B]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp une float %x, -0.0 %B = fadd float %z, %x %C = select i1 %A, float %y, float %B ret float %C } ; Invalid order of operands of select define float @select_fadd_fcmp_bad_13(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fadd_fcmp_bad_13( ; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[B:%.*]] = fadd nsz float [[X]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[Y:%.*]], float [[B]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp oeq float %x, -0.0 %B = fadd nsz float %x, %z %C = select i1 %A, float %y, float %B ret float %C } ; Invalid identity constant for FP op define float @select_fadd_fcmp_bad_14(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fadd_fcmp_bad_14( ; CHECK-NEXT: [[A:%.*]] = fcmp une float [[X:%.*]], -1.000000e+00 ; CHECK-NEXT: [[B:%.*]] = fadd nsz float [[X]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[Y:%.*]], float [[B]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp une float %x, -1.0 %B = fadd nsz float %x, %z %C = select i1 %A, float %y, float %B ret float %C } define float @select_fmul_fcmp_bad(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fmul_fcmp_bad( ; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 3.000000e+00 ; CHECK-NEXT: [[B:%.*]] = fmul nsz float [[X]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp oeq float %x, 3.0 %B = fmul nsz float %x, %z %C = select i1 %A, float %B, float %y ret float %C } define float @select_fmul_fcmp_bad_2(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fmul_fcmp_bad_2( ; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 1.000000e+00 ; CHECK-NEXT: [[B:%.*]] = fmul float [[X]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp oeq float %x, 1.0 %B = fmul float %x, %z %C = select i1 %A, float %B, float %y ret float %C } define float @select_fmul_icmp_bad(float %x, float %y, float %z, i32 %k) { ; CHECK-LABEL: @select_fmul_icmp_bad( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[K:%.*]], 0 ; CHECK-NEXT: [[B:%.*]] = fmul float [[X:%.*]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]] ; CHECK-NEXT: ret float [[C]] ; %A = icmp eq i32 %k, 0 %B = fmul float %x, %z %C = select i1 %A, float %B, float %y ret float %C } define float @select_fmul_icmp_bad_2(float %x, float %y, float %z, i32 %k) { ; CHECK-LABEL: @select_fmul_icmp_bad_2( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[K:%.*]], 0 ; CHECK-NEXT: [[B:%.*]] = fmul nsz float [[X:%.*]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]] ; CHECK-NEXT: ret float [[C]] ; %A = icmp eq i32 %k, 0 %B = fmul nsz float %x, %z %C = select i1 %A, float %B, float %y ret float %C } define float @select_fdiv_fcmp_bad(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fdiv_fcmp_bad( ; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 1.000000e+00 ; CHECK-NEXT: [[B:%.*]] = fdiv float [[X]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp oeq float %x, 1.0 %B = fdiv float %x, %z %C = select i1 %A, float %B, float %y ret float %C } define float @select_fdiv_fcmp_bad_2(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fdiv_fcmp_bad_2( ; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 3.000000e+00 ; CHECK-NEXT: [[B:%.*]] = fdiv nsz float [[X]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp oeq float %x, 3.0 %B = fdiv nsz float %x, %z %C = select i1 %A, float %B, float %y ret float %C } ; The transform is not valid when x = -0.0 and z = -0.0 ; (optimized code would return -0.0, but this returns +0.0). define float @select_fsub_fcmp_bad(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fsub_fcmp_bad( ; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 0.000000e+00 ; CHECK-NEXT: [[B:%.*]] = fsub float [[Z:%.*]], [[X]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp oeq float %x, 0.0 %B = fsub float %z, %x %C = select i1 %A, float %B, float %y ret float %C } define float @select_fsub_fcmp_bad_2(float %x, float %y, float %z) { ; CHECK-LABEL: @select_fsub_fcmp_bad_2( ; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 1.000000e+00 ; CHECK-NEXT: [[B:%.*]] = fsub nsz float [[Z:%.*]], [[X]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]] ; CHECK-NEXT: ret float [[C]] ; %A = fcmp oeq float %x, 1.0 %B = fsub nsz float %z, %x %C = select i1 %A, float %B, float %y ret float %C } define i32 @select_sub_icmp_bad(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_sub_icmp_bad( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0 ; CHECK-NEXT: [[B:%.*]] = sub i32 [[X]], [[Z:%.*]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, 0 %B = sub i32 %x, %z %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_sub_icmp_bad_2(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_sub_icmp_bad_2( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 1 ; CHECK-NEXT: [[B:%.*]] = sub i32 [[Z:%.*]], [[X]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, 1 %B = sub i32 %z, %x %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_sub_icmp_bad_3(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_sub_icmp_bad_3( ; CHECK-NEXT: [[A:%.*]] = icmp ne i32 [[X:%.*]], 0 ; CHECK-NEXT: call void @use2(i1 [[A]]) ; CHECK-NEXT: [[B:%.*]] = sub i32 [[Z:%.*]], [[X]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp ne i32 %x, 0 call void @use2(i1 %A) %B = sub i32 %z, %x %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_sub_icmp_4(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_sub_icmp_4( ; CHECK-NEXT: [[A:%.*]] = icmp ne i32 [[X:%.*]], 0 ; CHECK-NEXT: call void @use2(i1 [[A]]) ; CHECK-NEXT: [[B:%.*]] = sub i32 [[Z:%.*]], [[X]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp ne i32 %x, 0 call void @use2(i1 %A) %B = sub i32 %z, %x %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_sub_icmp_bad_4(i32 %x, i32 %y, i32 %z, i32 %k) { ; CHECK-LABEL: @select_sub_icmp_bad_4( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0 ; CHECK-NEXT: [[B:%.*]] = sub i32 [[Z:%.*]], [[K:%.*]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, 0 %B = sub i32 %z, %k %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_sub_icmp_bad_5(i32 %x, i32 %y, i32 %z, i32 %k) { ; CHECK-LABEL: @select_sub_icmp_bad_5( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], [[K:%.*]] ; CHECK-NEXT: [[B:%.*]] = sub i32 [[Z:%.*]], [[X]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, %k %B = sub i32 %z, %x %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_shl_icmp_bad(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_shl_icmp_bad( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 1 ; CHECK-NEXT: [[B:%.*]] = shl i32 [[Z:%.*]], [[X]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, 1 %B = shl i32 %z, %x %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_lshr_icmp_bad(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_lshr_icmp_bad( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 1 ; CHECK-NEXT: [[B:%.*]] = lshr i32 [[Z:%.*]], [[X]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, 1 %B = lshr i32 %z, %x %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_ashr_icmp_bad(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_ashr_icmp_bad( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 1 ; CHECK-NEXT: [[B:%.*]] = ashr i32 [[Z:%.*]], [[X]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, 1 %B = ashr i32 %z, %x %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_udiv_icmp_bad(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_udiv_icmp_bad( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 3 ; CHECK-NEXT: [[B:%.*]] = udiv i32 [[Z:%.*]], [[X]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, 3 %B = udiv i32 %z, %x %C = select i1 %A, i32 %B, i32 %y ret i32 %C } define i32 @select_sdiv_icmp_bad(i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select_sdiv_icmp_bad( ; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 3 ; CHECK-NEXT: [[B:%.*]] = sdiv i32 [[Z:%.*]], [[X]] ; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]] ; CHECK-NEXT: ret i32 [[C]] ; %A = icmp eq i32 %x, 3 %B = sdiv i32 %z, %x %C = select i1 %A, i32 %B, i32 %y ret i32 %C } !0 = !{!"branch_weights", i32 2, i32 10}