diff options
| author | Dale Johannesen <dalej@apple.com> | 2008-12-05 21:47:27 +0000 |
|---|---|---|
| committer | Dale Johannesen <dalej@apple.com> | 2008-12-05 21:47:27 +0000 |
| commit | 203af58aea3ae341d38e5c2c5b390b0c31d25557 (patch) | |
| tree | 8f120f606205a8437f8acacb0e52492d0841e82f /lib/Target/X86/X86ISelLowering.cpp | |
| parent | b51deb929ca95ce62e622b0475a05d83f26ab04d (diff) | |
Make LoopStrengthReduce smarter about hoisting things out of
loops when they can be subsumed into addressing modes.
Change X86 addressing mode check to realize that
some PIC references need an extra register.
(I believe this is correct for Linux, if not, I'm sure
someone will tell me.)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60608 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86ISelLowering.cpp')
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index 412a954566..44f28d3d77 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -6463,6 +6463,10 @@ bool X86TargetLowering::isLegalAddressingMode(const AddrMode &AM, // We can only fold this if we don't need an extra load. if (Subtarget->GVRequiresExtraLoad(AM.BaseGV, getTargetMachine(), false)) return false; + // If BaseGV requires a register, we cannot also have a BaseReg. + if (Subtarget->GVRequiresRegister(AM.BaseGV, getTargetMachine(), false) && + AM.HasBaseReg) + return false; // X86-64 only supports addr of globals in small code model. if (Subtarget->is64Bit()) { |