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Make early if conversion dependent upon the subtarget and add

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a subtarget hook to enable. Unconditionally add to the pass pipeline
for targets that might want to use it. No functional change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209340 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher
2014-05-21 23:40:26 +00:00
parent 595bdb7e8b
commit 189fe78e2f
10 changed files with 38 additions and 23 deletions
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13
lib/Target/X86/X86TargetMachine.cpp
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@@ -126,12 +126,6 @@ UseVZeroUpper("x86-use-vzeroupper", cl::Hidden,
cl::desc("Minimize AVX to SSE transition penalty"),
cl::init(true));
// Temporary option to control early if-conversion for x86 while adding machine
// models.
static cl::opt<bool>
X86EarlyIfConv("x86-early-ifcvt", cl::Hidden,
cl::desc("Enable early if-conversion on X86"));
//===----------------------------------------------------------------------===//
// X86 Analysis Pass Setup
//===----------------------------------------------------------------------===//
@@ -192,11 +186,8 @@ bool X86PassConfig::addInstSelector() {
}
bool X86PassConfig::addILPOpts() {
if (X86EarlyIfConv && getX86Subtarget().hasCMov()) {
addPass(&EarlyIfConverterID);
return true;
}
return false;
addPass(&EarlyIfConverterID);
return true;
}
bool X86PassConfig::addPreRegAlloc() {