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| author | Dan Gohman <gohman@apple.com> | 2009-01-06 23:34:46 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2009-01-06 23:34:46 +0000 |
| commit | cca2983291bb5502085148164ad77e8017dd8cde (patch) | |
| tree | b76c8174e691a3183382694496676092ad541987 /lib | |
| parent | 21213e75b57f87182cbfa7cd8f55a37bcb7c4097 (diff) | |
| download | llvm-cca2983291bb5502085148164ad77e8017dd8cde.tar.gz llvm-cca2983291bb5502085148164ad77e8017dd8cde.tar.bz2 llvm-cca2983291bb5502085148164ad77e8017dd8cde.tar.xz | |
Revert r42653 and forward-port the code that lets INC64_32r be
converted to LEA64_32r in x86's convertToThreeAddress. This
replaces code like this:
movl %esi, %edi
inc %edi
with this:
lea 1(%rsi), %edi
which appears to be beneficial.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61830 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/X86/X86InstrInfo.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/Target/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp index 9170c24ddb..c7ee6612fb 100644 --- a/lib/Target/X86/X86InstrInfo.cpp +++ b/lib/Target/X86/X86InstrInfo.cpp @@ -1108,7 +1108,8 @@ X86InstrInfo::convertToThreeAddress(MachineFunction::iterator &MFI, switch (MIOpc) { default: return 0; case X86::INC64r: - case X86::INC32r: { + case X86::INC32r: + case X86::INC64_32r: { assert(MI->getNumOperands() >= 2 && "Unknown inc instruction!"); unsigned Opc = MIOpc == X86::INC64r ? X86::LEA64r : (is64Bit ? X86::LEA64_32r : X86::LEA32r); @@ -1126,7 +1127,8 @@ X86InstrInfo::convertToThreeAddress(MachineFunction::iterator &MFI, Src, isKill, 1); break; case X86::DEC64r: - case X86::DEC32r: { + case X86::DEC32r: + case X86::DEC64_32r: { assert(MI->getNumOperands() >= 2 && "Unknown dec instruction!"); unsigned Opc = MIOpc == X86::DEC64r ? X86::LEA64r : (is64Bit ? X86::LEA64_32r : X86::LEA32r); |