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Fix regression with -O0 for mips .

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llvm-svn: 203469
This commit is contained in:
Reed Kotler 2014-03-10 16:31:25 +00:00
parent 4c9e269281
commit e1cab9f9f1
2 changed files with 45 additions and 0 deletions
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12
lib/Target/Mips/MipsTargetMachine.cpp
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@ -175,6 +175,9 @@ public:
virtual bool addInstSelector();
virtual void addMachineSSAOptimization();
virtual bool addPreEmitPass();
virtual bool addPreRegAlloc();
};
} // namespace
@ -208,6 +211,15 @@ void MipsPassConfig::addMachineSSAOptimization() {
TargetPassConfig::addMachineSSAOptimization();
}
bool MipsPassConfig::addPreRegAlloc() {
if (getOptLevel() == CodeGenOpt::None) {
addPass(createMipsOptimizePICCallPass(getMipsTargetMachine()));
return true;
}
else
return false;
}
void MipsTargetMachine::addAnalysisPasses(PassManagerBase &PM) {
if (Subtarget.allowMixed16_32()) {
DEBUG(errs() << "No ");

33
test/CodeGen/Mips/optimize-pic-o0.ll Normal file
View File

@ -0,0 +1,33 @@
; RUN: llc -mtriple=mipsel -O0 < %s | FileCheck %s
; Function Attrs: nounwind
define i32 @main() {
entry:
%retval = alloca i32, align 4
%i = alloca i32, align 4
store i32 0, i32* %retval
store i32 0, i32* %i, align 4
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%0 = load i32* %i, align 4
%cmp = icmp slt i32 %0, 10
br i1 %cmp, label %for.body, label %for.end
for.body: ; preds = %for.cond
call void bitcast (void (...)* @foo to void ()*)()
; CHECK: jalr $25
br label %for.inc
for.inc: ; preds = %for.body
%1 = load i32* %i, align 4
%inc = add nsw i32 %1, 1
store i32 %inc, i32* %i, align 4
br label %for.cond
for.end: ; preds = %for.cond
%2 = load i32* %retval
ret i32 %2
}
declare void @foo(...)