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This compiles Regression/CodeGen/X86/or-branch.ll into: _foo: subl $12, %esp call L_bar$stub movl 20(%esp), %eax movl 16(%esp), %ecx cmpl $5, %eax jl LBB1_1 #cond_true LBB1_3: #entry testl %ecx, %ecx jne LBB1_2 #UnifiedReturnBlock LBB1_1: #cond_true call L_bar$stub addl $12, %esp ret LBB1_2: #UnifiedReturnBlock addl $12, %esp ret instead of: _foo: subl $12, %esp call L_bar$stub movl 20(%esp), %eax movl 16(%esp), %ecx cmpl $4, %eax setg %al testl %ecx, %ecx setne %cl testb %cl, %al jne LBB1_2 #UnifiedReturnBlock LBB1_1: #cond_true call L_bar$stub addl $12, %esp ret LBB1_2: #UnifiedReturnBlock addl $12, %esp ret And on ppc to: cmpwi cr0, r29, 5 blt cr0, LBB1_1 ;cond_true LBB1_3: ;entry cmplwi cr0, r30, 0 bne cr0, LBB1_2 ;UnifiedReturnBlock instead of: cmpwi cr7, r4, 4 mfcr r2 addic r4, r3, -1 subfe r30, r4, r3 rlwinm r29, r2, 30, 31, 31 and r2, r29, r30 cmplwi cr0, r2, 0 bne cr0, LBB1_2 ;UnifiedReturnBlock git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31230 91177308-0d34-0410-b5e6-96231b3b80d8 |
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.. | ||
AsmPrinter.h | ||
DwarfWriter.h | ||
ELFWriter.h | ||
InstrScheduling.h | ||
IntrinsicLowering.h | ||
LinkAllCodegenComponents.h | ||
LiveInterval.h | ||
LiveIntervalAnalysis.h | ||
LiveVariables.h | ||
MachineBasicBlock.h | ||
MachineCodeEmitter.h | ||
MachineConstantPool.h | ||
MachineDebugInfo.h | ||
MachineFrameInfo.h | ||
MachineFunction.h | ||
MachineFunctionPass.h | ||
MachineInstr.h | ||
MachineInstrBuilder.h | ||
MachineJumpTableInfo.h | ||
MachineLocation.h | ||
MachinePassRegistry.h | ||
MachineRelocation.h | ||
MachOWriter.h | ||
Passes.h | ||
RegAllocRegistry.h | ||
SchedGraphCommon.h | ||
ScheduleDAG.h | ||
SchedulerRegistry.h | ||
SelectionDAG.h | ||
SelectionDAGCSEMap.h | ||
SelectionDAGISel.h | ||
SelectionDAGNodes.h | ||
SSARegMap.h | ||
ValueTypes.h | ||
ValueTypes.td |