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Mark STREX* as earlyclobber for the success result register.

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llvm-svn: 91555
This commit is contained in:
Jim Grosbach 2009-12-16 19:44:06 +00:00
parent 483afaa7f7
commit 666c19db99
2 changed files with 2 additions and 2 deletions
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2
lib/Target/ARM/ARMInstrInfo.td
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@ -1740,7 +1740,7 @@ def LDREXD : AIldrex<0b01, (outs GPR:$dest, GPR:$dest2), (ins GPR:$ptr),
[]>;
}
let mayStore = 1 in {
let mayStore = 1, Constraints = "@earlyclobber $success" in {
def STREXB : AIstrex<0b10, (outs GPR:$success), (ins GPR:$src, GPR:$ptr),
NoItinerary,
"strexb", "\t$success, $src, [$ptr]",

2
lib/Target/ARM/ARMInstrThumb2.td
View File

@ -1752,7 +1752,7 @@ def t2LDREXD : T2I_ldrex<0b11, (outs GPR:$dest, GPR:$dest2), (ins GPR:$ptr),
[], {?, ?, ?, ?}>;
}
let mayStore = 1 in {
let mayStore = 1, Constraints = "@earlyclobber $success" in {
def t2STREXB : T2I_strex<0b00, (outs GPR:$success), (ins GPR:$src, GPR:$ptr),
AddrModeNone, Size4Bytes, NoItinerary,
"strexb", "\t$success, $src, [$ptr]", "", []>;