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more code restructuring, no functionality change. 

llvm-svn: 126146
This commit is contained in:
Chris Lattner 2011-02-21 21:50:25 +00:00
parent 70a4e9b5e2
commit e3694b166a
1 changed files with 7 additions and 13 deletions
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20
clang/lib/Sema/SemaStmt.cpp
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@ -1582,28 +1582,22 @@ StmtResult Sema::ActOnAsmStmt(SourceLocation AsmLoc, bool IsSimple,
continue;
// If the smaller input/output operand is not mentioned in the asm string,
// then we can promote it to a larger input and the asm string won't notice.
// Check this case now.
bool InputMentioned = isOperandMentioned(i+NumOutputs, Pieces);
bool OutputMentioned = isOperandMentioned(TiedTo, Pieces);
// then we can promote the smaller one to a larger input and the asm string
// won't notice.
bool SmallerValueMentioned = false;
// If this is a reference to the input and if the input was the smaller
// one, then we have to reject this asm.
if (InputMentioned) {
if (isOperandMentioned(i+NumOutputs, Pieces)) {
// This is a use in the asm string of the smaller operand. Since we
// codegen this by promoting to a wider value, the asm will get printed
// "wrong".
if (InSize < OutSize)
SmallerValueMentioned = true;
SmallerValueMentioned |= InSize < OutSize;
}
if (OutputMentioned) {
if (isOperandMentioned(TiedTo, Pieces)) {
// If this is a reference to the output, and if the output is the larger
// value, then it's ok because we'll promote the input to the larger type.
if (OutSize < InSize)
SmallerValueMentioned = true;
SmallerValueMentioned |= OutSize < InSize;
}
// If the smaller value wasn't mentioned in the asm string, and if the
@ -1612,7 +1606,7 @@ StmtResult Sema::ActOnAsmStmt(SourceLocation AsmLoc, bool IsSimple,
if (!SmallerValueMentioned && InputDomain != AD_Other &&
OutputConstraintInfos[TiedTo].allowsRegister())
continue;
Diag(InputExpr->getLocStart(),
diag::err_asm_tying_incompatible_types)
<< InTy << OutTy << OutputExpr->getSourceRange()