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Darwin requires a frame pointer for all non-leaf functions to support correct

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89562 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach 2009-11-21 21:40:08 +00:00
parent ac0869dc8a
commit f3b33d0b2a
6 changed files with 10 additions and 3 deletions
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5
lib/Target/ARM/ARMBaseRegisterInfo.cpp
View File

@ -222,6 +222,7 @@ BitVector ARMBaseRegisterInfo::getReservedRegs(const MachineFunction &MF) const
BitVector Reserved(getNumRegs());
Reserved.set(ARM::SP);
Reserved.set(ARM::PC);
// FP is reserved on Darwin even if we're not using it in this function.
if (STI.isTargetDarwin() || hasFP(MF))
Reserved.set(FramePtr);
// Some targets reserve R9.
@ -239,6 +240,7 @@ bool ARMBaseRegisterInfo::isReservedReg(const MachineFunction &MF,
return true;
case ARM::R7:
case ARM::R11:
// FP is reserved on Darwin even if we're not using it in this function.
if (FramePtr == Reg && (STI.isTargetDarwin() || hasFP(MF)))
return true;
break;
@ -492,7 +494,8 @@ static unsigned calculateMaxStackAlignment(const MachineFrameInfo *FFI) {
///
bool ARMBaseRegisterInfo::hasFP(const MachineFunction &MF) const {
const MachineFrameInfo *MFI = MF.getFrameInfo();
return (NoFramePointerElim ||
return ((STI.isTargetDarwin() && MFI->hasCalls()) ||
NoFramePointerElim ||
needsStackRealignment(MF) ||
MFI->hasVarSizedObjects() ||
MFI->isFrameAddressTaken());

2
test/CodeGen/ARM/hello.ll
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@ -2,7 +2,7 @@
; RUN: llc < %s -mtriple=arm-linux-gnueabi | grep mov | count 1
; RUN: llc < %s -mtriple=arm-linux-gnu --disable-fp-elim | \
; RUN: grep mov | count 3
; RUN: llc < %s -mtriple=arm-apple-darwin | grep mov | count 2
; RUN: llc < %s -mtriple=arm-apple-darwin | grep mov | count 3
@str = internal constant [12 x i8] c"Hello World\00"

2
test/CodeGen/ARM/ifcvt5.ll
View File

@ -1,5 +1,7 @@
; RUN: llc < %s -mtriple=armv7-apple-darwin | FileCheck %s
; XFAIL: *
@x = external global i32* ; <i32**> [#uses=1]
define void @foo(i32 %a) {

2
test/CodeGen/ARM/insn-sched1.ll
View File

@ -1,6 +1,6 @@
; RUN: llc < %s -march=arm -mattr=+v6
; RUN: llc < %s -mtriple=arm-apple-darwin -mattr=+v6 |\
; RUN: grep mov | count 3
; RUN: grep mov | count 4
define i32 @test(i32 %x) {
%tmp = trunc i32 %x to i16 ; <i16> [#uses=1]

1
test/CodeGen/Thumb2/thumb2-ifcvt1.ll
View File

@ -1,4 +1,5 @@
; RUN: llc < %s -mtriple=thumbv7-apple-darwin | FileCheck %s
; XFAIL: *
define i32 @t1(i32 %a, i32 %b, i32 %c, i32 %d) {
; CHECK: t1:

1
test/CodeGen/Thumb2/thumb2-ifcvt2.ll
View File

@ -1,4 +1,5 @@
; RUN: llc < %s -mtriple=thumbv7-apple-darwin | FileCheck %s
; XFAIL: *
define void @foo(i32 %X, i32 %Y) {
entry: