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| author | Dan Gohman <gohman@apple.com> | 2009-01-21 23:40:54 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2009-01-21 23:40:54 +0000 |
| commit | dbf5f2557e5daa89e51d59b0da3329b58c84e4cc (patch) | |
| tree | d1ae77143327a61834186fffc54c0b281d1ce757 | |
| parent | c03c46a6af3d53172d48d9e4d36748a40c878cff (diff) | |
| download | external_llvm-dbf5f2557e5daa89e51d59b0da3329b58c84e4cc.zip external_llvm-dbf5f2557e5daa89e51d59b0da3329b58c84e4cc.tar.gz external_llvm-dbf5f2557e5daa89e51d59b0da3329b58c84e4cc.tar.bz2 | |
Recognize inline asm for bswap on x86-64 GLIBC. This allows it
to be supported in the JIT.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62730 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/X86/X86TargetAsmInfo.cpp | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/lib/Target/X86/X86TargetAsmInfo.cpp b/lib/Target/X86/X86TargetAsmInfo.cpp index e21596c..226feb7 100644 --- a/lib/Target/X86/X86TargetAsmInfo.cpp +++ b/lib/Target/X86/X86TargetAsmInfo.cpp @@ -411,11 +411,21 @@ bool X86TargetAsmInfo<BaseTAI>::ExpandInlineAsm(CallInst *CI) const { // bswap $0 if (AsmPieces.size() == 2 && - AsmPieces[0] == "bswap" && AsmPieces[1] == "$0") { + AsmPieces[0] == "bswap" && (AsmPieces[1] == "$0" || + AsmPieces[1] == "${0:q}")) { // No need to check constraints, nothing other than the equivalent of // "=r,0" would be valid here. return LowerToBSwap(CI); } + // rorw $$8, ${0:w} --> llvm.bswap.i16 + if (CI->getType() == Type::Int16Ty && + AsmPieces.size() == 3 && + AsmPieces[0] == "rorw" && + AsmPieces[1] == "$$8," && + AsmPieces[2] == "${0:w}" && + IA->getConstraintString() == "=r,0,~{dirflag},~{fpsr},~{flags},~{cc}") { + return LowerToBSwap(CI); + } break; case 3: if (CI->getType() == Type::Int64Ty && Constraints.size() >= 2 && |