[PowerPC] [SSP] Fix stack guard load for 32-bit.

r266809 incorrectly used LD to load the stack guard, it should be LWZ.

Differential Revision: http://reviews.llvm.org/D19358

llvm-svn: 267017

diff --git a/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp b/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp
index 9b682da..204dc28 100644 (file)
--- a/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp
+++ b/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp
@@ -1864,7 +1864,7 @@ bool PPCInstrInfo::expandPostRAPseudo(MachineBasicBlock::iterator MI) const {
            "Only Linux target is expected to contain LOAD_STACK_GUARD");
     const int64_t Offset = Subtarget.isPPC64() ? -0x7010 : -0x7008;
     const unsigned Reg = Subtarget.isPPC64() ? PPC::X13 : PPC::R2;
-    MI->setDesc(get(PPC::LD));
+    MI->setDesc(get(Subtarget.isPPC64() ? PPC::LD : PPC::LWZ));
     MachineInstrBuilder(*MI->getParent()->getParent(), MI)
         .addImm(Offset)
         .addReg(Reg);

diff --git a/llvm/test/CodeGen/PowerPC/stack-protector.ll b/llvm/test/CodeGen/PowerPC/stack-protector.ll
index 8760f19..57d1c7e 100644 (file)
--- a/llvm/test/CodeGen/PowerPC/stack-protector.ll
+++ b/llvm/test/CodeGen/PowerPC/stack-protector.ll
@@ -5,7 +5,7 @@
 
 ; DARWIN32: __stack_chk_guard
 ; DARWIN64: __stack_chk_guard
-; LINUX32: ld {{[0-9]+}}, -28680(2)
+; LINUX32: lwz {{[0-9]+}}, -28680(2)
 ; LINUX64: ld {{[0-9]+}}, -28688(13)
 
 ; DARWIN32: __stack_chk_fail