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c[ms-inline asm] It's possible to have a SizeDirective rewrite and an
Input/Output rewrite to the same location. Make sure the SizeDirective rewrite is performed first. This also ensure the sort algorithm is stable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175317 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -4041,7 +4041,21 @@ static int RewritesSort(const void *A, const void *B) {
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return -1;
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if (AsmRewriteB->Loc.getPointer() < AsmRewriteA->Loc.getPointer())
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return 1;
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return 0;
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// It's possible to have a SizeDirective rewrite and an Input/Output rewrite
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// to the same location. Make sure the SizeDirective rewrite is performed
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// first. This also ensure the sort algorithm is stable.
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if (AsmRewriteA->Kind == AOK_SizeDirective) {
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assert ((AsmRewriteB->Kind == AOK_Input || AsmRewriteB->Kind == AOK_Output) &&
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"Expected an Input/Output rewrite!");
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return -1;
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}
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if (AsmRewriteB->Kind == AOK_SizeDirective) {
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assert ((AsmRewriteA->Kind == AOK_Input || AsmRewriteA->Kind == AOK_Output) &&
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"Expected an Input/Output rewrite!");
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return 1;
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}
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llvm_unreachable ("Unstable rewrite sort.");
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}
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bool
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@ -4174,6 +4188,7 @@ AsmParser::ParseMSInlineAsm(void *AsmLoc, std::string &AsmString,
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E = AsmStrRewrites.end();
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I != E; ++I) {
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const char *Loc = (*I).Loc.getPointer();
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assert(Loc >= Start && "Expected Loc to be after Start!");
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unsigned AdditionalSkip = 0;
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AsmRewriteKind Kind = (*I).Kind;
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