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832d560a7e
This instruction is just a control flow marker - it should not actually exist in the object file. Unfortunately, nothing catches it before it gets to AsmPrinter. If integrated assembler is used, it's considered to be a normal 4-byte instruction, and emitted as an all-0 word, crashing the program. With external assembler, a comment is emitted. Fixed by setting Size to 0 and handling it in MCCodeEmitter - this means the comment will still be emitted if integrated assembler is not used. This broke an ASan test, which has been disabled for a long time as a result (see the discussion on D19657). We can reenable it once this lands. llvm-svn: 267943
49 lines
1.3 KiB
LLVM
49 lines
1.3 KiB
LLVM
; RUN: llc -filetype=obj <%s | llvm-objdump --disassemble - | FileCheck %s
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target datalayout = "e-m:e-i64:64-n32:64"
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target triple = "powerpc64le-unknown-linux-gnu"
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@ptr = common global i8* null, align 8
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; Verify there's no junk between these two instructions from misemitted
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; EH_SjLj_Setup.
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; CHECK: li 3, 1
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; CHECK-NEXT: b .+4
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define void @h() nounwind {
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%1 = load i8**, i8*** bitcast (i8** @ptr to i8***), align 8
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%2 = tail call i8* @llvm.frameaddress(i32 0)
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store i8* %2, i8** %1, align 8
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%3 = tail call i8* @llvm.stacksave()
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%4 = getelementptr inbounds i8*, i8** %1, i64 2
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store i8* %3, i8** %4, align 8
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%5 = bitcast i8** %1 to i8*
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%6 = tail call i32 @llvm.eh.sjlj.setjmp(i8* %5)
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%7 = icmp eq i32 %6, 0
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br i1 %7, label %9, label %8
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; <label>:8: ; preds = %0
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tail call void @g()
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br label %10
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; <label>:9: ; preds = %0
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tail call void @f()
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br label %10
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; <label>:10: ; preds = %9, %8
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ret void
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}
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; Function Attrs: nounwind readnone
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declare i8* @llvm.frameaddress(i32)
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; Function Attrs: nounwind
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declare i8* @llvm.stacksave()
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; Function Attrs: nounwind
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declare i32 @llvm.eh.sjlj.setjmp(i8*)
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declare void @g()
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declare void @f()
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