c23b4fbdbb
Now that #149310 has restricted lifetime intrinsics to only work on allocas, we can also drop the explicit size argument. Instead, the size is implied by the alloca. This removes the ability to only mark a prefix of an alloca alive/dead. We never used that capability, so we should remove the need to handle that possibility everywhere (though many key places, including stack coloring, did not actually respect this).
85 lines
3.7 KiB
LLVM
85 lines
3.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes='sroa<preserve-cfg>' -S | FileCheck %s --check-prefixes=CHECK,CHECK-PRESERVE-CFG
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; RUN: opt < %s -passes='sroa<modify-cfg>' -S | FileCheck %s --check-prefixes=CHECK,CHECK-MODIFY-CFG
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declare void @llvm.assume(i1)
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declare void @llvm.lifetime.start.p0(ptr nocapture %ptr)
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declare void @llvm.lifetime.end.p0(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 poison, i64 2) ]
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; CHECK-NEXT: call void @llvm.assume(i1 true) [ "ignore"(ptr poison, 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 poison, i64 8), "ignore"(ptr poison, i64 16) ]
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; CHECK-NEXT: call void @llvm.assume(i1 true) [ "ignore"(ptr poison), "ignore"(ptr poison, 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 poison, i64 8), "ignore"(ptr poison, i64 16) ]
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; CHECK-NEXT: call void @llvm.assume(i1 true) [ "ignore"(ptr poison), "ignore"(ptr poison, 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(ptr %A)
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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(ptr %A)
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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 poison), "ignore"(ptr poison, i64 8), "ignore"(ptr poison, i64 16) ]
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; CHECK-NEXT: call void @llvm.assume(i1 true) [ "ignore"(ptr poison), "ignore"(ptr poison, i64 2), "ignore"(ptr poison) ]
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; CHECK-NEXT: call void @llvm.assume(i1 true) [ "ignore"(ptr poison), "ignore"(ptr poison, i64 2), "ignore"(ptr poison) ]
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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(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(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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;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
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; CHECK-MODIFY-CFG: {{.*}}
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; CHECK-PRESERVE-CFG: {{.*}}
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