diff options
| author | Chris Lattner <sabre@nondot.org> | 2008-01-16 05:56:59 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2008-01-16 05:56:59 +0000 |
| commit | 7ff79c2d9d5e0c014ca8283cd38f5fbf3dd67790 (patch) | |
| tree | 9fa33b732507848b56458b5d43d0a75f3ed48fcf /lib | |
| parent | 142fb3fee8ebdcf5a501f6fc7d4dfe909e9c478e (diff) | |
My previous commit had an incomplete message, it should have been:
make the 'fp return in ST(0)' optimization smart enough to
look through token factor nodes. THis allows us to compile
testcases like CodeGen/X86/fp-stack-retcopy.ll into:
_carg:
subl $12, %esp
call L_foo$stub
fstpl (%esp)
fldl (%esp)
addl $12, %esp
ret
instead of:
_carg:
subl $28, %esp
call L_foo$stub
fstpl 16(%esp)
movsd 16(%esp), %xmm0
movsd %xmm0, 8(%esp)
fldl 8(%esp)
addl $28, %esp
ret
Still not optimal, but much better and this is a trivial patch. Fixing
the rest requires invasive surgery that is is not llvm 2.2 material.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46054 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index eb8e5e3832..de55a7c6f4 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -767,7 +767,7 @@ SDOperand X86TargetLowering::LowerRET(SDOperand Op, SelectionDAG &DAG) { // If this is a load into a scalarsse value, don't store the loaded value // back to the stack, only to reload it: just replace the scalar-sse load. if (ISD::isNON_EXTLoad(Value.Val) && - Chain.reachesChainWithoutSideEffects(Value.getOperand(0))) { + Chain.reachesChainWithoutSideEffects(Value.getOperand(0))) { Chain = Value.getOperand(0); MemLoc = Value.getOperand(1); } else { |