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; To test that __tsan_func_exit always happen before musttaill call and no exception handling code.
; RUN: opt < %s -passes=tsan -S | FileCheck %s
define internal i32 @preallocated_musttail(i32* preallocated(i32) %p) sanitize_thread {
%rv = load i32, i32* %p
ret i32 %rv
}
define i32 @call_preallocated_musttail(i32* preallocated(i32) %a) sanitize_thread {
%r = musttail call i32 @preallocated_musttail(i32* preallocated(i32) %a)
ret i32 %r
}
; CHECK-LABEL: define i32 @call_preallocated_musttail(i32* preallocated(i32) %a)
; CHECK: call void @__tsan_func_exit()
; CHECK-NEXT: %r = musttail call i32 @preallocated_musttail(i32* preallocated(i32) %a)
; CHECK-NEXT: ret i32 %r
define i32 @call_preallocated_musttail_cast(i32* preallocated(i32) %a) sanitize_thread {
%r = musttail call i32 @preallocated_musttail(i32* preallocated(i32) %a)
%t = bitcast i32 %r to i32
ret i32 %t
}
; CHECK-LABEL: define i32 @call_preallocated_musttail_cast(i32* preallocated(i32) %a)
; CHECK: call void @__tsan_func_exit()
; CHECK-NEXT: %r = musttail call i32 @preallocated_musttail(i32* preallocated(i32) %a)
; CHECK-NEXT: %t = bitcast i32 %r to i32
; CHECK-NEXT: ret i32 %t
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