; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt -ipsccp -S %s | FileCheck %s declare i8 @llvm.abs.i8(i8, i1) declare <2 x i8> @llvm.abs.v2i8(<2 x i8>, i1) declare i8 @llvm.umax.i8(i8, i8) declare void @use(i1) declare void @use_vec(<2 x i1>) define void @abs1(i8* %p) { ; CHECK-LABEL: @abs1( ; CHECK-NEXT: [[X:%.*]] = load i8, i8* [[P:%.*]], align 1, [[RNG0:!range !.*]] ; CHECK-NEXT: [[ABS:%.*]] = call i8 @llvm.abs.i8(i8 [[X]], i1 false) ; CHECK-NEXT: call void @use(i1 true) ; CHECK-NEXT: call void @use(i1 true) ; CHECK-NEXT: [[CMP3:%.*]] = icmp sge i8 [[ABS]], 1 ; CHECK-NEXT: call void @use(i1 [[CMP3]]) ; CHECK-NEXT: [[CMP4:%.*]] = icmp slt i8 [[ABS]], 9 ; CHECK-NEXT: call void @use(i1 [[CMP4]]) ; CHECK-NEXT: ret void ; %x = load i8, i8* %p, !range !{i8 -9, i8 10} %abs = call i8 @llvm.abs.i8(i8 %x, i1 false) %cmp1 = icmp sge i8 %abs, 0 call void @use(i1 %cmp1) %cmp2 = icmp slt i8 %abs, 10 call void @use(i1 %cmp2) %cmp3 = icmp sge i8 %abs, 1 call void @use(i1 %cmp3) %cmp4 = icmp slt i8 %abs, 9 call void @use(i1 %cmp4) ret void } ; Even if we don't know anything about the input range of the operand, ; we still know something about the result range of abs(). define void @abs2(i8 %x) { ; CHECK-LABEL: @abs2( ; CHECK-NEXT: [[ABS:%.*]] = call i8 @llvm.abs.i8(i8 [[X:%.*]], i1 true) ; CHECK-NEXT: call void @use(i1 true) ; CHECK-NEXT: ret void ; %abs = call i8 @llvm.abs.i8(i8 %x, i1 true) %cmp = icmp sge i8 %abs, 0 call void @use(i1 %cmp) ret void } define void @abs2_vec(<2 x i8> %x) { ; CHECK-LABEL: @abs2_vec( ; CHECK-NEXT: [[ABS:%.*]] = call <2 x i8> @llvm.abs.v2i8(<2 x i8> [[X:%.*]], i1 true) ; CHECK-NEXT: [[CMP:%.*]] = icmp sge <2 x i8> [[ABS]], zeroinitializer ; CHECK-NEXT: call void @use_vec(<2 x i1> [[CMP]]) ; CHECK-NEXT: ret void ; %abs = call <2 x i8> @llvm.abs.v2i8(<2 x i8> %x, i1 true) %cmp = icmp sge <2 x i8> %abs, zeroinitializer call void @use_vec(<2 x i1> %cmp) ret void } define void @umax1(i8* %p1, i8* %p2) { ; CHECK-LABEL: @umax1( ; CHECK-NEXT: [[X1:%.*]] = load i8, i8* [[P1:%.*]], align 1, [[RNG1:!range !.*]] ; CHECK-NEXT: [[X2:%.*]] = load i8, i8* [[P2:%.*]], align 1, [[RNG2:!range !.*]] ; CHECK-NEXT: [[M:%.*]] = call i8 @llvm.umax.i8(i8 [[X1]], i8 [[X2]]) ; CHECK-NEXT: call void @use(i1 true) ; CHECK-NEXT: call void @use(i1 true) ; CHECK-NEXT: [[CMP3:%.*]] = icmp uge i8 [[M]], 6 ; CHECK-NEXT: call void @use(i1 [[CMP3]]) ; CHECK-NEXT: [[CMP4:%.*]] = icmp ult i8 [[M]], 14 ; CHECK-NEXT: call void @use(i1 [[CMP4]]) ; CHECK-NEXT: ret void ; %x1 = load i8, i8* %p1, !range !{i8 0, i8 10} %x2 = load i8, i8* %p2, !range !{i8 5, i8 15} %m = call i8 @llvm.umax.i8(i8 %x1, i8 %x2) %cmp1 = icmp uge i8 %m, 5 call void @use(i1 %cmp1) %cmp2 = icmp ult i8 %m, 15 call void @use(i1 %cmp2) %cmp3 = icmp uge i8 %m, 6 call void @use(i1 %cmp3) %cmp4 = icmp ult i8 %m, 14 call void @use(i1 %cmp4) ret void } define void @umax2(i8 %x) { ; CHECK-LABEL: @umax2( ; CHECK-NEXT: [[M:%.*]] = call i8 @llvm.umax.i8(i8 [[X:%.*]], i8 10) ; CHECK-NEXT: call void @use(i1 true) ; CHECK-NEXT: ret void ; %m = call i8 @llvm.umax.i8(i8 %x, i8 10) %cmp = icmp uge i8 %m, 10 call void @use(i1 %cmp) ret void }