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| author | Hal Finkel <hfinkel@anl.gov> | 2015-10-28 03:26:45 +0000 |
|---|---|---|
| committer | Hal Finkel <hfinkel@anl.gov> | 2015-10-28 03:26:45 +0000 |
| commit | f4052340a4861ad2ffb516d21426b6506950770f (patch) | |
| tree | c0e5365cac577264918b830aecf171bbcaaadcab /llvm/lib/Target | |
| parent | 3ef1e689c9c72da61d79b5df324d46372e9ea439 (diff) | |
| download | bcm5719-llvm-f4052340a4861ad2ffb516d21426b6506950770f.tar.gz bcm5719-llvm-f4052340a4861ad2ffb516d21426b6506950770f.zip | |
[PowerPC] Replace cntlz[.] with cntlzw[.]
cntlz is the old POWER mnemonic. cntlzw is the PowerPC mnemonic.
This change fixes an issue when -no-integrated-as: The opcode cntlz is
unrecognized by gas
Alias the POWER mnemonic cntlz[.] to the PowerPC mnemonic cntlzw[.]
This is done for because the POWER cntlz mnemonic has be used by LLVM for
a very long time. We need to make sure that assembly programs
that are using the cntlz[.] do not break with this change.
Change PowerPC tests to reflect the insn change from cntlz to cntlzw.
Add assembly test to verify cntlz[.] is encoded correctly.
Patch by Tom Rix!
llvm-svn: 251489
Diffstat (limited to 'llvm/lib/Target')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCInstrInfo.td | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCInstrInfo.td b/llvm/lib/Target/PowerPC/PPCInstrInfo.td index 24fd9bd5c1f..cc1af1a7132 100644 --- a/llvm/lib/Target/PowerPC/PPCInstrInfo.td +++ b/llvm/lib/Target/PowerPC/PPCInstrInfo.td @@ -3883,8 +3883,11 @@ def : InstAlias<"rotlw. $rA, $rS, $rB", (RLWNMo gprc:$rA, gprc:$rS, gprc:$rB, 0, def : InstAlias<"clrlwi $rA, $rS, $n", (RLWINM gprc:$rA, gprc:$rS, 0, u5imm:$n, 31)>; def : InstAlias<"clrlwi. $rA, $rS, $n", (RLWINMo gprc:$rA, gprc:$rS, 0, u5imm:$n, 31)>; -def : InstAlias<"cntlz $rA, $rS", (CNTLZW gprc:$rA, gprc:$rS)>; -def : InstAlias<"cntlz. $rA, $rS", (CNTLZWo gprc:$rA, gprc:$rS)>; +def : InstAlias<"cntlzw $rA, $rS", (CNTLZW gprc:$rA, gprc:$rS)>; +def : InstAlias<"cntlzw. $rA, $rS", (CNTLZWo gprc:$rA, gprc:$rS)>; +// The POWER variant +def : MnemonicAlias<"cntlz", "cntlzw">; +def : MnemonicAlias<"cntlz.", "cntlzw.">; def EXTLDI : PPCAsmPseudo<"extldi $rA, $rS, $n, $b", (ins g8rc:$rA, g8rc:$rS, u6imm:$n, u6imm:$b)>; |
