From 749dc72bdcf214b1a3e2b4eee37e836a39e6bdea Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Sun, 10 Oct 2010 18:34:00 +0000 Subject: 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 --- lib/Target/PowerPC/PPCISelLowering.cpp | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'lib/Target/PowerPC') 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().isPPC64() ? 8:4); + // Set up the register classes. addRegisterClass(MVT::i32, PPC::GPRCRegisterClass); addRegisterClass(MVT::f32, PPC::F4RCRegisterClass); -- cgit v1.1