late-address-taken.ll
2.56 KB
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; RUN: llc -mtriple=x86_64-pc-windows-msvc < %s -enable-shrink-wrap=false | FileCheck %s
; Make sure shrink-wrapping does not break the lowering of exception handling.
; RUN: llc -mtriple=x86_64-pc-windows-msvc < %s -enable-shrink-wrap=true -pass-remarks-output=%t | FileCheck %s
; RUN: cat %t | FileCheck %s --check-prefix=REMARKS
; Repro cases from PR25168
; test @catchret - catchret target is not address-taken until PEI
; splits it into lea/mov followed by ret. Make sure the MBB is
; handled, both by tempting BranchFolding to merge it with %early_out
; and delete it, and by checking that we emit a proper reference
; to it in the LEA
declare void @ProcessCLRException()
declare void @f()
define void @catchret(i1 %b) personality void ()* @ProcessCLRException {
entry:
br i1 %b, label %body, label %early_out
early_out:
ret void
body:
invoke void @f()
to label %exit unwind label %catch.pad
catch.pad:
%cs1 = catchswitch within none [label %catch.body] unwind to caller
catch.body:
%catch = catchpad within %cs1 [i32 33554467]
catchret from %catch to label %exit
exit:
ret void
}
; CHECK-LABEL: catchret: # @catchret
; CHECK: [[Exit:^[^ :]+]]: # Block address taken
; CHECK-NEXT: # %exit
; CHECK: # %catch.body
; CHECK: .seh_endprolog
; CHECK: leaq [[Exit]](%rip), %rax
; CHECK: retq # CATCHRET
; REMARKS: Pass: shrink-wrap
; REMARKS-NEXT: Name: UnsupportedEHFunclets
; REMARKS-NEXT: Function: catchret
; REMARKS-NEXT: Args:
; REMARKS-NEXT: - String: EH Funclets are not supported yet.
; test @setjmp - similar to @catchret, but the MBB in question
; is the one generated when the setjmp's block is split
@buf = internal global [5 x i8*] zeroinitializer
declare i8* @llvm.frameaddress(i32) nounwind readnone
declare i8* @llvm.stacksave() nounwind
declare i32 @llvm.eh.sjlj.setjmp(i8*) nounwind
declare void @llvm.eh.sjlj.longjmp(i8*) nounwind
define void @setjmp(i1 %b) nounwind {
entry:
br i1 %b, label %early_out, label %sj
early_out:
ret void
sj:
%fp = call i8* @llvm.frameaddress(i32 0)
store i8* %fp, i8** getelementptr inbounds ([5 x i8*], [5 x i8*]* @buf, i64 0, i64 0), align 16
%sp = call i8* @llvm.stacksave()
store i8* %sp, i8** getelementptr inbounds ([5 x i8*], [5 x i8*]* @buf, i64 0, i64 2), align 16
call i32 @llvm.eh.sjlj.setjmp(i8* bitcast ([5 x i8*]* @buf to i8*))
ret void
}
; CHECK-LABEL: setjmp: # @setjmp
; CHECK: # %sj
; CHECK: leaq [[Label:\..+]](%rip), %[[Reg:.+]]{{$}}
; CHECK-NEXT: movq %[[Reg]], buf
; CHECK: {{^}}[[Label]]: # Block address taken
; CHECK-NEXT: # %sj