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63 lines
2.2 KiB
LLVM
63 lines
2.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
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; RUN: opt -p constraint-elimination -S %s | FileCheck %s
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; Tests for https://github.com/llvm/llvm-project/issues/78621.
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define i1 @umin_not_used(i32 %arg) {
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; CHECK-LABEL: define i1 @umin_not_used(
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; CHECK-SAME: i32 [[ARG:%.*]]) {
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; CHECK-NEXT: [[ICMP:%.*]] = icmp slt i32 [[ARG]], 0
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; CHECK-NEXT: [[SHL:%.*]] = shl nuw nsw i32 [[ARG]], 3
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; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.umin.i32(i32 [[SHL]], i32 80)
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; CHECK-NEXT: [[CMP2:%.*]] = shl nuw nsw i32 [[ARG]], 3
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; CHECK-NEXT: ret i1 [[ICMP]]
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;
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%icmp = icmp slt i32 %arg, 0
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%shl = shl nuw nsw i32 %arg, 3
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call i32 @llvm.umin.i32(i32 %shl, i32 80)
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%cmp2 = shl nuw nsw i32 %arg, 3
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ret i1 %icmp
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}
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define i1 @umin_poison_is_UB_via_call(i32 %arg) {
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; CHECK-LABEL: define i1 @umin_poison_is_UB_via_call(
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; CHECK-SAME: i32 [[ARG:%.*]]) {
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; CHECK-NEXT: [[SHL:%.*]] = shl nuw nsw i32 [[ARG]], 3
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; CHECK-NEXT: [[MIN:%.*]] = call i32 @llvm.umin.i32(i32 [[SHL]], i32 80)
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; CHECK-NEXT: call void @noundef(i32 noundef [[MIN]])
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; CHECK-NEXT: [[CMP2:%.*]] = shl nuw nsw i32 [[ARG]], 3
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; CHECK-NEXT: ret i1 false
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;
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%icmp = icmp slt i32 %arg, 0
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%shl = shl nuw nsw i32 %arg, 3
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%min = call i32 @llvm.umin.i32(i32 %shl, i32 80)
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call void @noundef(i32 noundef %min)
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%cmp2 = shl nuw nsw i32 %arg, 3
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ret i1 %icmp
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}
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define i1 @umin_poison_call_before_UB(i32 %arg) {
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; CHECK-LABEL: define i1 @umin_poison_call_before_UB(
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; CHECK-SAME: i32 [[ARG:%.*]]) {
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; CHECK-NEXT: [[ICMP:%.*]] = icmp slt i32 [[ARG]], 0
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; CHECK-NEXT: [[SHL:%.*]] = shl nuw nsw i32 [[ARG]], 3
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; CHECK-NEXT: [[MIN:%.*]] = call i32 @llvm.umin.i32(i32 [[SHL]], i32 80)
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; CHECK-NEXT: call void @fn()
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; CHECK-NEXT: call void @noundef(i32 noundef [[MIN]])
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; CHECK-NEXT: [[CMP2:%.*]] = shl nuw nsw i32 [[ARG]], 3
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; CHECK-NEXT: ret i1 [[ICMP]]
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;
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%icmp = icmp slt i32 %arg, 0
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%shl = shl nuw nsw i32 %arg, 3
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%min = call i32 @llvm.umin.i32(i32 %shl, i32 80)
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call void @fn()
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call void @noundef(i32 noundef %min)
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%cmp2 = shl nuw nsw i32 %arg, 3
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ret i1 %icmp
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}
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declare i32 @llvm.umin.i32(i32, i32) #0
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declare void @noundef(i32 noundef)
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declare void @fn()
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