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