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[PowerPC] Support extended sc mnemonic

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A plain "sc" without argument is supposed to be treated like "sc 0"
by the assembler.  This patch adds a corresponding alias.

Problem reported by Joerg Sonnenberger.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183687 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Ulrich Weigand 2013-06-10 17:19:43 +00:00
parent 7c6f90d486
commit 278916500a
2 changed files with 4 additions and 0 deletions
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2
lib/Target/PowerPC/PPCInstrInfo.td
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@ -2154,6 +2154,8 @@ class PPCAsmPseudo<string asm, dag iops>
let isPseudo = 1;
}
def : InstAlias<"sc", (SC 0)>;
def : InstAlias<"mr $rA, $rB", (OR8 g8rc:$rA, g8rc:$rB, g8rc:$rB)>;
def SLWI : PPCAsmPseudo<"slwi $rA, $rS, $n",

2
test/MC/PowerPC/ppc64-encoding.s
View File

@ -43,6 +43,8 @@
# CHECK: sc 1 # encoding: [0x44,0x00,0x00,0x22]
sc 1
# CHECK: sc 0 # encoding: [0x44,0x00,0x00,0x02]
sc
# Fixed-point facility