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