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| ; RUN: llc -o - < %s | FileCheck %s
target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
target triple = "x86_64-apple-macosx"
; Even if the target supports shrink-wrapping, the prologue and epilogue
; must not move because a crash can happen anywhere and sanitizers need
; to be able to unwind from the PC of the crash.
; CHECK-LABEL: sanitize:
; CHECK: pushq
; CHECK: incl 40
; CHECK: popq
; CHECK-NEXT: retq
; CHECK: movl $40, %edi
; CHECK-NEXT: callq ___asan_report_load4
define void @sanitize() #0 {
entry:
%tmp = load i8, i8* inttoptr (i64 17592186044421 to i8*)
%tmp1 = icmp ne i8 %tmp, 0
br i1 %tmp1, label %if.then, label %else
if.then:
%tmp3 = icmp sge i8 3, %tmp
br i1 %tmp3, label %else, label %end
else:
call void @__asan_report_load4(i64 40)
call void asm sideeffect "", ""()
unreachable
end:
%tmp6 = load i32, i32* inttoptr (i64 40 to i32*), align 8
%inc = add nsw i32 %tmp6, 1
store i32 %inc, i32* inttoptr (i64 40 to i32*), align 8
ret void
}
attributes #0 = { sanitize_address nounwind "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" }
declare void @__asan_report_load4(i64)
|