Teach local register allocator to deal with landing pad MBB's.
llvm-svn: 51647
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@ -549,10 +549,10 @@ void RALocal::AllocateBasicBlock(MachineBasicBlock &MBB) {
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// If this is the first basic block in the machine function, add live-in
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// If this is the first basic block in the machine function, add live-in
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// registers as active.
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// registers as active.
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if (&MBB == &*MF->begin()) {
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if (&MBB == &*MF->begin() || MBB.isLandingPad()) {
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for (MachineRegisterInfo::livein_iterator I=MF->getRegInfo().livein_begin(),
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for (MachineBasicBlock::livein_iterator I = MBB.livein_begin(),
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E = MF->getRegInfo().livein_end(); I != E; ++I) {
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E = MBB.livein_end(); I != E; ++I) {
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unsigned Reg = I->first;
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unsigned Reg = *I;
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MF->getRegInfo().setPhysRegUsed(Reg);
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MF->getRegInfo().setPhysRegUsed(Reg);
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PhysRegsUsed[Reg] = 0; // It is free and reserved now
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PhysRegsUsed[Reg] = 0; // It is free and reserved now
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AddToPhysRegsUseOrder(Reg);
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AddToPhysRegsUseOrder(Reg);
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@ -0,0 +1,30 @@
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; RUN: llvm-as < %s | llc -mtriple=i386-apple-darwin -regalloc=local
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@_ZTVN10Evaluation10GridOutputILi3EEE = external constant [5 x i32 (...)*] ; <[5 x i32 (...)*]*> [#uses=1]
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declare i8* @llvm.eh.exception() nounwind
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declare i8* @_Znwm(i32)
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declare i8* @__cxa_begin_catch(i8*) nounwind
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define i32 @main(i32 %argc, i8** %argv) {
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entry:
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br i1 false, label %bb37, label %bb34
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bb34: ; preds = %entry
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ret i32 1
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bb37: ; preds = %entry
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%tmp12.i.i.i.i.i66 = invoke i8* @_Znwm( i32 12 )
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to label %tmp12.i.i.i.i.i.noexc65 unwind label %lpad243 ; <i8*> [#uses=0]
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tmp12.i.i.i.i.i.noexc65: ; preds = %bb37
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unreachable
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lpad243: ; preds = %bb37
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%eh_ptr244 = call i8* @llvm.eh.exception( ) ; <i8*> [#uses=1]
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store i32 (...)** getelementptr ([5 x i32 (...)*]* @_ZTVN10Evaluation10GridOutputILi3EEE, i32 0, i32 2), i32 (...)*** null, align 8
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%tmp133 = call i8* @__cxa_begin_catch( i8* %eh_ptr244 ) nounwind ; <i8*> [#uses=0]
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unreachable
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}
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