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Match SelectionDAG logic for enabling movt.

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Darwin doesn't do static, and ELF targets only support static.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147740 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2012-01-07 20:49:15 +00:00
parent eb3d460b25
commit 8f37a2422e
2 changed files with 7 additions and 2 deletions
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6
lib/Target/ARM/ARMFastISel.cpp
View File

@ -620,7 +620,11 @@ unsigned ARMFastISel::ARMMaterializeGV(const GlobalValue *GV, EVT VT) {
unsigned DestReg = createResultReg(TLI.getRegClassFor(VT));
// Use movw+movt when possible, it avoids constant pool entries.
if (Subtarget->isTargetDarwin() && Subtarget->useMovt()) {
// Darwin targets don't support movt with Reloc::Static, see
// ARMTargetLowering::LowerGlobalAddressDarwin. Other targets only support
// static movt relocations.
if (Subtarget->useMovt() &&
Subtarget->isTargetDarwin() == (RelocM != Reloc::Static)) {
unsigned Opc;
switch (RelocM) {
case Reloc::PIC_:

3
lib/Target/ARM/ARMISelLowering.cpp
View File

@ -2166,7 +2166,8 @@ SDValue ARMTargetLowering::LowerGlobalAddressDarwin(SDValue Op,
MachineFunction &MF = DAG.getMachineFunction();
ARMFunctionInfo *AFI = MF.getInfo<ARMFunctionInfo>();
// FIXME: Enable this for static codegen when tool issues are fixed.
// FIXME: Enable this for static codegen when tool issues are fixed. Also
// update ARMFastISel::ARMMaterializeGV.
if (Subtarget->useMovt() && RelocM != Reloc::Static) {
++NumMovwMovt;
// FIXME: Once remat is capable of dealing with instructions with register