forked from OSchip/llvm-project
90 lines
3.2 KiB
LLVM
90 lines
3.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -instcombine < %s | FileCheck %s
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@g = external global i32
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define i1 @smin(i32 %other) {
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; CHECK-LABEL: @smin(
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; CHECK-NEXT: [[TEST:%.*]] = icmp sgt i32 %other, 0
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; CHECK-NEXT: ret i1 [[TEST]]
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;
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%positive = load i32, i32* @g, !range !{i32 1, i32 2048}
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%cmp = icmp slt i32 %positive, %other
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%sel = select i1 %cmp, i32 %positive, i32 %other
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%test = icmp sgt i32 %sel, 0
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ret i1 %test
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}
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; Range metadata doesn't work for vectors, so find another way to trigger isKnownPositive().
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define <2 x i1> @smin_vec(<2 x i32> %x, <2 x i32> %other) {
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; CHECK-LABEL: @smin_vec(
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; CHECK-NEXT: [[TEST:%.*]] = icmp sgt <2 x i32> %other, zeroinitializer
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; CHECK-NEXT: ret <2 x i1> [[TEST]]
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;
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%notneg = and <2 x i32> %x, <i32 7, i32 7>
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%positive = or <2 x i32> %notneg, <i32 1, i32 1>
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%cmp = icmp slt <2 x i32> %positive, %other
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%sel = select <2 x i1> %cmp, <2 x i32> %positive, <2 x i32> %other
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%test = icmp sgt <2 x i32> %sel, zeroinitializer
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ret <2 x i1> %test
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}
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define i1 @smin_commute(i32 %other) {
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; CHECK-LABEL: @smin_commute(
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; CHECK-NEXT: [[TEST:%.*]] = icmp sgt i32 %other, 0
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; CHECK-NEXT: ret i1 [[TEST]]
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;
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%positive = load i32, i32* @g, !range !{i32 1, i32 2048}
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%cmp = icmp slt i32 %other, %positive
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%sel = select i1 %cmp, i32 %other, i32 %positive
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%test = icmp sgt i32 %sel, 0
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ret i1 %test
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}
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define <2 x i1> @smin_commute_vec(<2 x i32> %x, <2 x i32> %other) {
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; CHECK-LABEL: @smin_commute_vec(
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; CHECK-NEXT: [[TEST:%.*]] = icmp sgt <2 x i32> %other, zeroinitializer
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; CHECK-NEXT: ret <2 x i1> [[TEST]]
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;
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%notneg = and <2 x i32> %x, <i32 7, i32 7>
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%positive = or <2 x i32> %notneg, <i32 1, i32 1>
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%cmp = icmp slt <2 x i32> %other, %positive
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%sel = select <2 x i1> %cmp, <2 x i32> %other, <2 x i32> %positive
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%test = icmp sgt <2 x i32> %sel, zeroinitializer
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ret <2 x i1> %test
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}
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; %positive might be zero
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define i1 @maybe_not_positive(i32 %other) {
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; CHECK-LABEL: @maybe_not_positive(
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; CHECK-NEXT: [[POSITIVE:%.*]] = load i32, i32* @g, align 4, !range !0
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; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[POSITIVE]], %other
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; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 [[POSITIVE]], i32 %other
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; CHECK-NEXT: [[TEST:%.*]] = icmp sgt i32 [[SEL]], 0
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; CHECK-NEXT: ret i1 [[TEST]]
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;
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%positive = load i32, i32* @g, !range !{i32 0, i32 2048}
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%cmp = icmp slt i32 %positive, %other
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%sel = select i1 %cmp, i32 %positive, i32 %other
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%test = icmp sgt i32 %sel, 0
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ret i1 %test
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}
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define <2 x i1> @maybe_not_positive_vec(<2 x i32> %x, <2 x i32> %other) {
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; CHECK-LABEL: @maybe_not_positive_vec(
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; CHECK-NEXT: [[NOTNEG:%.*]] = and <2 x i32> %x, <i32 7, i32 7>
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; CHECK-NEXT: [[CMP:%.*]] = icmp slt <2 x i32> [[NOTNEG]], %other
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; CHECK-NEXT: [[SEL:%.*]] = select <2 x i1> [[CMP]], <2 x i32> [[NOTNEG]], <2 x i32> %other
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; CHECK-NEXT: [[TEST:%.*]] = icmp sgt <2 x i32> [[SEL]], zeroinitializer
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; CHECK-NEXT: ret <2 x i1> [[TEST]]
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;
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%notneg = and <2 x i32> %x, <i32 7, i32 7>
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%cmp = icmp slt <2 x i32> %notneg, %other
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%sel = select <2 x i1> %cmp, <2 x i32> %notneg, <2 x i32> %other
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%test = icmp sgt <2 x i32> %sel, zeroinitializer
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ret <2 x i1> %test
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}
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