36 lines
1.0 KiB
LLVM
36 lines
1.0 KiB
LLVM
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; To test that asan does not break the musttail call contract.
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;
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; RUN: opt < %s -asan -asan-module -S -enable-new-pm=0 | FileCheck %s
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; RUN: opt < %s -passes='asan-pipeline' -S | FileCheck %s
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define internal i32 @foo(i32* %p) sanitize_address {
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%rv = load i32, i32* %p
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ret i32 %rv
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}
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declare void @alloca_test_use([10 x i8]*)
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define i32 @call_foo(i32* %a) sanitize_address {
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%x = alloca [10 x i8], align 1
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call void @alloca_test_use([10 x i8]* %x)
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%r = musttail call i32 @foo(i32* %a)
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ret i32 %r
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}
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; CHECK-LABEL: define i32 @call_foo(i32* %a)
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; CHECK: %r = musttail call i32 @foo(i32* %a)
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; CHECK-NEXT: ret i32 %r
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define i32 @call_foo_cast(i32* %a) sanitize_address {
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%x = alloca [10 x i8], align 1
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call void @alloca_test_use([10 x i8]* %x)
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%r = musttail call i32 @foo(i32* %a)
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%t = bitcast i32 %r to i32
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ret i32 %t
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}
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; CHECK-LABEL: define i32 @call_foo_cast(i32* %a)
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; CHECK: %r = musttail call i32 @foo(i32* %a)
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; CHECK-NEXT: %t = bitcast i32 %r to i32
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; CHECK-NEXT: ret i32 %t
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