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Move ARM if-conversion before post-ra scheduling.

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llvm-svn: 106355
This commit is contained in:
Evan Cheng 2010-06-18 23:32:07 +00:00
parent 823dff64cd
commit e9ba3241a3
2 changed files with 3 additions and 16 deletions
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17
lib/Target/ARM/ARMTargetMachine.cpp
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@ -27,11 +27,6 @@ EarlyITBlockFormation("thumb2-early-it-blocks", cl::Hidden,
cl::desc("Form IT blocks early before register allocation"),
cl::init(false));
static cl::opt<bool>
EarlyIfConvert("arm-early-if-convert", cl::Hidden,
cl::desc("Run if-conversion before post-ra scheduling"),
cl::init(false));
static MCAsmInfo *createMCAsmInfo(const Target &T, StringRef TT) {
Triple TheTriple(TT);
switch (TheTriple.getOS()) {
@ -130,7 +125,7 @@ bool ARMBaseTargetMachine::addPreSched2(PassManagerBase &PM,
// proper scheduling.
PM.add(createARMExpandPseudoPass());
if (EarlyIfConvert && OptLevel != CodeGenOpt::None) {
if (OptLevel != CodeGenOpt::None) {
if (!Subtarget.isThumb1Only())
PM.add(createIfConverterPass());
if (Subtarget.isThumb2())
@ -142,16 +137,8 @@ bool ARMBaseTargetMachine::addPreSched2(PassManagerBase &PM,
bool ARMBaseTargetMachine::addPreEmitPass(PassManagerBase &PM,
CodeGenOpt::Level OptLevel) {
if (!EarlyIfConvert && OptLevel != CodeGenOpt::None) {
if (!Subtarget.isThumb1Only())
PM.add(createIfConverterPass());
}
if (Subtarget.isThumb2()) {
if (!EarlyIfConvert)
PM.add(createThumb2ITBlockPass());
if (Subtarget.isThumb2())
PM.add(createThumb2SizeReductionPass());
}
PM.add(createARMConstantIslandPass());
return true;

2
test/CodeGen/Thumb2/thumb2-select_xform.ll
View File

@ -3,8 +3,8 @@
define i32 @t1(i32 %a, i32 %b, i32 %c) nounwind {
; CHECK: t1
; CHECK: sub.w r0, r1, #-2147483648
; CHECK: subs r0, #1
; CHECK: cmp r2, #10
; CHECK: sub.w r0, r0, #1
; CHECK: it gt
; CHECK: movgt r0, r1
%tmp1 = icmp sgt i32 %c, 10