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Handle spilling the PPC GPRC_NOR0 register class 

GPRC_NOR0 is not a subclass of GPRC (because it also contains the ZERO pseudo
register). As a result, we also need to check for it in the spilling code.

llvm-svn: 200288
This commit is contained in:
Hal Finkel 2014-01-28 05:32:58 +00:00
parent 74169dcf45
commit 4e703bcecd
2 changed files with 31 additions and 4 deletions
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12
llvm/lib/Target/PowerPC/PPCInstrInfo.cpp
View File

@ -639,12 +639,14 @@ PPCInstrInfo::StoreRegToStackSlot(MachineFunction &MF,
// update isStoreToStackSlot.
DebugLoc DL;
if (PPC::GPRCRegClass.hasSubClassEq(RC)) {
if (PPC::GPRCRegClass.hasSubClassEq(RC) ||
PPC::GPRC_NOR0RegClass.hasSubClassEq(RC)) {
NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::STW))
.addReg(SrcReg,
getKillRegState(isKill)),
FrameIdx));
} else if (PPC::G8RCRegClass.hasSubClassEq(RC)) {
} else if (PPC::G8RCRegClass.hasSubClassEq(RC) ||
PPC::G8RC_NOX0RegClass.hasSubClassEq(RC)) {
NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::STD))
.addReg(SrcReg,
getKillRegState(isKill)),
@ -764,10 +766,12 @@ PPCInstrInfo::LoadRegFromStackSlot(MachineFunction &MF, DebugLoc DL,
// Note: If additional load instructions are added here,
// update isLoadFromStackSlot.
if (PPC::GPRCRegClass.hasSubClassEq(RC)) {
if (PPC::GPRCRegClass.hasSubClassEq(RC) ||
PPC::GPRC_NOR0RegClass.hasSubClassEq(RC)) {
NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::LWZ),
DestReg), FrameIdx));
} else if (PPC::G8RCRegClass.hasSubClassEq(RC)) {
} else if (PPC::G8RCRegClass.hasSubClassEq(RC) ||
PPC::G8RC_NOX0RegClass.hasSubClassEq(RC)) {
NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::LD), DestReg),
FrameIdx));
} else if (PPC::F8RCRegClass.hasSubClassEq(RC)) {

23
llvm/test/CodeGen/PowerPC/spill-nor0.ll Normal file
View File

@ -0,0 +1,23 @@
; RUN: llc < %s -O0 -mcpu=ppc64 | FileCheck %s
target datalayout = "E-m:e-i64:64-n32:64"
target triple = "powerpc64-unknown-linux-gnu"
; Function Attrs: nounwind
define void @_ZN4llvm3sys17RunningOnValgrindEv() #0 {
entry:
br i1 undef, label %if.then, label %if.end
if.then: ; preds = %entry
ret void
if.end: ; preds = %entry
%0 = call i64 asm sideeffect "mr 3,$1\0A\09mr 4,$2\0A\09rotldi 0,0,3 ; rotldi 0,0,13\0A\09rotldi 0,0,61 ; rotldi 0,0,51\0A\09or 1,1,1\0A\09mr $0,3", "=b,b,b,~{cc},~{memory},~{r3},~{r4}"(i32 0, i64* undef) #0
unreachable
; CHECK-LABEL: @_ZN4llvm3sys17RunningOnValgrindEv
; CHECK: stw
; CHECK: lwz
}
attributes #0 = { nounwind }