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Add hook in MCSection to decide when to use "optimized nops", for each

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section kind. Previously, optimized nops were only used for MachO.
Also added tests for ELF and COFF.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115523 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jan Wen Voung
2010-10-04 17:32:41 +00:00
parent 7a391832f4
commit 083cf1574f
13 changed files with 113 additions and 9 deletions
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7
lib/MC/MCParser/AsmParser.cpp
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@@ -1654,12 +1654,7 @@ bool AsmParser::ParseDirectiveAlign(bool IsPow2, unsigned ValueSize) {
// Check whether we should use optimal code alignment for this .align
// directive.
//
// FIXME: This should be using a target hook.
bool UseCodeAlign = false;
if (const MCSectionMachO *S = dyn_cast<MCSectionMachO>(
getStreamer().getCurrentSection()))
UseCodeAlign = S->hasAttribute(MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS);
bool UseCodeAlign = getStreamer().getCurrentSection()->UseCodeAlign();
if ((!HasFillExpr || Lexer.getMAI().getTextAlignFillValue() == FillExpr) &&
ValueSize == 1 && UseCodeAlign) {
getStreamer().EmitCodeAlignment(Alignment, MaxBytesToFill);