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PPC pre-increment load instructions do not have side effects

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178972 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hal Finkel 2013-04-07 05:46:58 +00:00
parent aecbe24268
commit fa1d102a05
2 changed files with 3 additions and 3 deletions
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4
lib/Target/PowerPC/PPCInstr64Bit.td
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@ -594,7 +594,7 @@ def LWZX8 : XForm_1<31, 23, (outs G8RC:$rD), (ins memrr:$src),
// Update forms.
let mayLoad = 1 in {
let mayLoad = 1, neverHasSideEffects = 1 in {
def LBZU8 : DForm_1<35, (outs G8RC:$rD, ptr_rc_nor0:$ea_result), (ins memri:$addr),
"lbzu $rD, $addr", LdStLoadUpd,
[]>, RegConstraint<"$addr.reg = $ea_result">,
@ -666,7 +666,7 @@ def LDBRX : XForm_1<31, 532, (outs G8RC:$rD), (ins memrr:$src),
"ldbrx $rD, $src", LdStLoad,
[(set i64:$rD, (PPClbrx xoaddr:$src, i64))]>, isPPC64;
let mayLoad = 1 in
let mayLoad = 1, neverHasSideEffects = 1 in
def LDU : DSForm_1<58, 1, (outs G8RC:$rD, ptr_rc_nor0:$ea_result), (ins memrix:$addr),
"ldu $rD, $addr", LdStLDU,
[]>, RegConstraint<"$addr.reg = $ea_result">, isPPC64,

2
lib/Target/PowerPC/PPCInstrInfo.td
View File

@ -757,7 +757,7 @@ def LFD : DForm_1<50, (outs F8RC:$rD), (ins memri:$src),
// Unindexed (r+i) Loads with Update (preinc).
let mayLoad = 1 in {
let mayLoad = 1, neverHasSideEffects = 1 in {
def LBZU : DForm_1<35, (outs GPRC:$rD, ptr_rc_nor0:$ea_result), (ins memri:$addr),
"lbzu $rD, $addr", LdStLoadUpd,
[]>, RegConstraint<"$addr.reg = $ea_result">,