81 lines
3.4 KiB
LLVM
81 lines
3.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=mem2reg -S -o - < %s | FileCheck %s
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declare void @llvm.assume(i1)
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declare void @llvm.lifetime.start.p0(i64 %size, ptr nocapture %ptr)
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declare void @llvm.lifetime.end.p0(i64 %size, ptr nocapture %ptr)
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define void @positive_assume_uses(ptr %arg) {
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; CHECK-LABEL: @positive_assume_uses(
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; CHECK-NEXT: call void @llvm.assume(i1 true) [ "nonnull"(ptr [[ARG:%.*]]), "ignore"(ptr undef, i64 2) ]
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; CHECK-NEXT: call void @llvm.assume(i1 true) [ "ignore"(ptr undef, i64 8), "nonnull"(ptr [[ARG]]) ]
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; CHECK-NEXT: ret void
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;
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%A = alloca i32
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call void @llvm.assume(i1 true) ["nonnull"(ptr %arg), "align"(ptr %A, i64 2)]
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store i32 1, ptr %A
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call void @llvm.assume(i1 true) ["align"(ptr %A, i64 8), "nonnull"(ptr %arg)]
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ret void
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}
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define void @negative_assume_condition_use() {
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; CHECK-LABEL: @negative_assume_condition_use(
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[CND:%.*]] = icmp eq ptr [[A]], null
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; CHECK-NEXT: call void @llvm.assume(i1 [[CND]])
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; CHECK-NEXT: store i32 1, ptr [[A]], align 4
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; CHECK-NEXT: ret void
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;
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%A = alloca i32
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%cnd = icmp eq ptr %A, null
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call void @llvm.assume(i1 %cnd)
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store i32 1, ptr %A
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ret void
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}
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define void @positive_multiple_assume_uses() {
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; CHECK-LABEL: @positive_multiple_assume_uses(
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; CHECK-NEXT: call void @llvm.assume(i1 true) [ "ignore"(ptr undef, i64 8), "ignore"(ptr undef, i64 16) ]
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; CHECK-NEXT: call void @llvm.assume(i1 true) [ "ignore"(ptr undef), "ignore"(ptr undef, i64 2) ]
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; CHECK-NEXT: ret void
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;
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%A = alloca {i8, i16}
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call void @llvm.assume(i1 true) ["align"(ptr %A, i64 8), "align"(ptr %A, i64 16)]
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store {i8, i16} zeroinitializer, ptr %A
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call void @llvm.assume(i1 true) ["nonnull"(ptr %A), "align"(ptr %A, i64 2)]
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ret void
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}
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define void @positive_gep_assume_uses() {
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; CHECK-LABEL: @positive_gep_assume_uses(
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; CHECK-NEXT: call void @llvm.assume(i1 true) [ "ignore"(ptr undef, i64 8), "ignore"(ptr undef, i64 16) ]
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; CHECK-NEXT: call void @llvm.assume(i1 true) [ "ignore"(ptr undef), "ignore"(ptr undef, i64 2) ]
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; CHECK-NEXT: ret void
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;
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%A = alloca {i8, i16}
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%B = getelementptr {i8, i16}, ptr %A, i32 0, i32 0
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call void @llvm.lifetime.start.p0(i64 2, ptr %B)
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call void @llvm.assume(i1 true) ["align"(ptr %B, i64 8), "align"(ptr %B, i64 16)]
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store {i8, i16} zeroinitializer, ptr %A
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call void @llvm.lifetime.end.p0(i64 2, ptr %B)
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call void @llvm.assume(i1 true) ["nonnull"(ptr %B), "align"(ptr %B, i64 2)]
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ret void
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}
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define void @positive_mixed_assume_uses() {
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; CHECK-LABEL: @positive_mixed_assume_uses(
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; CHECK-NEXT: call void @llvm.assume(i1 true) [ "ignore"(ptr undef), "ignore"(ptr undef, i64 8), "ignore"(ptr undef, i64 16) ]
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; CHECK-NEXT: call void @llvm.assume(i1 true) [ "ignore"(ptr undef), "ignore"(ptr undef, i64 2), "ignore"(ptr undef) ]
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; CHECK-NEXT: call void @llvm.assume(i1 true) [ "ignore"(ptr undef), "ignore"(ptr undef, i64 2), "ignore"(ptr undef) ]
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; CHECK-NEXT: ret void
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;
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%A = alloca i8
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call void @llvm.lifetime.start.p0(i64 2, ptr %A)
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call void @llvm.assume(i1 true) ["nonnull"(ptr %A), "align"(ptr %A, i64 8), "align"(ptr %A, i64 16)]
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store i8 1, ptr %A
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call void @llvm.lifetime.end.p0(i64 2, ptr %A)
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call void @llvm.assume(i1 true) ["nonnull"(ptr %A), "align"(ptr %A, i64 2), "nonnull"(ptr %A)]
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call void @llvm.assume(i1 true) ["nonnull"(ptr %A), "align"(ptr %A, i64 2), "nonnull"(ptr %A)]
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ret void
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}
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