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dfefd2f3fc
of one or more 1 bits (may wrap from least significant bit to most
significant bit) as the rlwinm rather than andi., andis., or some longer
instructons sequence.
int andn4(int z) { return z & -4; }
int clearhi(int z) { return z & 0x0000FFFF; }
int clearlo(int z) { return z & 0xFFFF0000; }
int clearmid(int z) { return z & 0x00FFFF00; }
int clearwrap(int z) { return z & 0xFF0000FF; }
_andn4:
rlwinm r3, r3, 0, 0, 29
blr
_clearhi:
rlwinm r3, r3, 0, 16, 31
blr
_clearlo:
rlwinm r3, r3, 0, 0, 15
blr
_clearmid:
rlwinm r3, r3, 0, 8, 23
blr
_clearwrap:
rlwinm r3, r3, 0, 24, 7
blr
llvm-svn: 16832
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|---|---|---|
| .. | ||
| LICENSE.TXT | ||
| Makefile | ||
| PowerPC.h | ||
| PowerPC.td | ||
| PowerPCAsmPrinter.cpp | ||
| PowerPCBranchSelector.cpp | ||
| PowerPCFrameInfo.h | ||
| PowerPCInstrBuilder.h | ||
| PowerPCInstrFormats.td | ||
| PowerPCInstrInfo.h | ||
| PowerPCInstrInfo.td | ||
| PowerPCJITInfo.h | ||
| PowerPCRegisterInfo.h | ||
| PowerPCRegisterInfo.td | ||
| PowerPCTargetMachine.cpp | ||
| PowerPCTargetMachine.h | ||
| PPC32.td | ||
| PPC32CodeEmitter.cpp | ||
| PPC32InstrInfo.cpp | ||
| PPC32InstrInfo.h | ||
| PPC32ISelSimple.cpp | ||
| PPC32JITInfo.h | ||
| PPC32RegisterInfo.cpp | ||
| PPC32RegisterInfo.h | ||
| PPC32RegisterInfo.td | ||
| PPC32TargetMachine.h | ||
| PPC64.td | ||
| PPC64CodeEmitter.cpp | ||
| PPC64InstrInfo.cpp | ||
| PPC64InstrInfo.h | ||
| PPC64ISelSimple.cpp | ||
| PPC64JITInfo.h | ||
| PPC64RegisterInfo.cpp | ||
| PPC64RegisterInfo.h | ||
| PPC64RegisterInfo.td | ||
| PPC64TargetMachine.h | ||
| README.txt | ||
TODO: * implement not-R0 register GPR class * fix rlwimi generation to be use-and-def * implement scheduling info * implement powerpc-64 for darwin * implement powerpc-64 for aix * use stfiwx in float->int * should hint to the branch select pass that it doesn't need to print the second unconditional branch, so we don't end up with things like: b .LBBl42__2E_expand_function_8_674 ; loopentry.24 b .LBBl42__2E_expand_function_8_42 ; NewDefault b .LBBl42__2E_expand_function_8_42 ; NewDefault Currently failing tests that should pass: * MultiSource |- Applications | `- hbd: miscompilation