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| author | Chris Lattner <sabre@nondot.org> | 2010-10-10 18:34:00 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2010-10-10 18:34:00 +0000 |
| commit | 749dc72bdcf214b1a3e2b4eee37e836a39e6bdea (patch) | |
| tree | 840171b60f96922294b5a6aac81af61dfca7067d /lib | |
| parent | 7d2e7bef90785b174a350f3bc4b240256be9831c (diff) | |
| download | external_llvm-749dc72bdcf214b1a3e2b4eee37e836a39e6bdea.zip external_llvm-749dc72bdcf214b1a3e2b4eee37e836a39e6bdea.tar.gz external_llvm-749dc72bdcf214b1a3e2b4eee37e836a39e6bdea.tar.bz2 | |
fix the expansion of va_arg instruction on PPC to know the arg
alignment for PPC32/64, avoiding some masking operations.
llvm-gcc expands vaarg inline instead of using the instruction
so it has never hit this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116168 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/PowerPC/PPCISelLowering.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp index 7300fd5..618e5c1 100644 --- a/lib/Target/PowerPC/PPCISelLowering.cpp +++ b/lib/Target/PowerPC/PPCISelLowering.cpp @@ -73,6 +73,10 @@ PPCTargetLowering::PPCTargetLowering(PPCTargetMachine &TM) setUseUnderscoreSetJmp(true); setUseUnderscoreLongJmp(true); + // On PPC32/64, arguments smaller than 4/8 bytes are extended, so all + // arguments are at least 4/8 bytes aligned. + setMinStackArgumentAlignment(TM.getSubtarget<PPCSubtarget>().isPPC64() ? 8:4); + // Set up the register classes. addRegisterClass(MVT::i32, PPC::GPRCRegisterClass); addRegisterClass(MVT::f32, PPC::F4RCRegisterClass); |