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https://github.com/c64scene-ar/llvm-6502.git
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79 lines
2.0 KiB
LLVM
79 lines
2.0 KiB
LLVM
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; RUN: opt -inline %s -S -o - | FileCheck %s
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declare void @llvm.lifetime.start(i64, i8*)
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declare void @llvm.lifetime.end(i64, i8*)
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define void @helper_both_markers() {
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%a = alloca i8
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call void @llvm.lifetime.start(i64 1, i8* %a)
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call void @llvm.lifetime.end(i64 1, i8* %a)
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ret void
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}
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define void @test_both_markers() {
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; CHECK: @test_both_markers
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; CHECK: llvm.lifetime.start(i64 1
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; CHECK-NEXT: llvm.lifetime.end(i64 1
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call void @helper_both_markers()
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; CHECK-NEXT: llvm.lifetime.start(i64 1
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; CHECK-NEXT: llvm.lifetime.end(i64 1
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call void @helper_both_markers()
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; CHECK-NEXT: ret void
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ret void
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}
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;; Without this, the inliner will simplify out @test_no_marker before adding
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;; any lifetime markers.
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declare void @use(i8* %a)
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define void @helper_no_markers() {
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%a = alloca i8
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call void @use(i8* %a)
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ret void
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}
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;; We can't use CHECK-NEXT because there's an extra call void @use in between.
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;; Instead, we use CHECK-NOT to verify that there are no other lifetime calls.
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define void @test_no_marker() {
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; CHECK: @test_no_marker
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; CHECK-NOT: lifetime
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; CHECK: llvm.lifetime.start(i64 -1
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; CHECK-NOT: lifetime
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; CHECK: llvm.lifetime.end(i64 -1
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call void @helper_no_markers()
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; CHECK-NOT: lifetime
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; CHECK: llvm.lifetime.start(i64 -1
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; CHECK-NOT: lifetime
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; CHECK: llvm.lifetime.end(i64 -1
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call void @helper_no_markers()
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; CHECK-NOT: lifetime
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; CHECK: ret void
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ret void
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}
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define void @helper_two_casts() {
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%a = alloca i32
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%b = bitcast i32* %a to i8*
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call void @llvm.lifetime.start(i64 4, i8* %b)
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%c = bitcast i32* %a to i8*
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call void @llvm.lifetime.end(i64 4, i8* %c)
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ret void
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}
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define void @test_two_casts() {
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; CHECK: @test_two_casts
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; CHECK-NOT: lifetime
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; CHECK: llvm.lifetime.start(i64 4
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; CHECK-NOT: lifetime
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; CHECK: llvm.lifetime.end(i64 4
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call void @helper_two_casts()
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; CHECK-NOT: lifetime
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; CHECK: llvm.lifetime.start(i64 4
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; CHECK-NOT: lifetime
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; CHECK: llvm.lifetime.end(i64 4
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call void @helper_two_casts()
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; CHECK-NOT: lifetime
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; CHECK: ret void
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ret void
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}
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