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