[llvm] r178973 - PPC pre-increment load instructions do not have side effects

Hal Finkel hfinkel at anl.gov
Sat Apr 6 23:30:47 PDT 2013


Author: hfinkel
Date: Sun Apr  7 01:30:47 2013
New Revision: 178973

URL: http://llvm.org/viewvc/llvm-project?rev=178973&view=rev
Log:
PPC pre-increment load instructions do not have side effects

A few were missed in r178972.

Modified:
    llvm/trunk/lib/Target/PowerPC/PPCInstr64Bit.td

Modified: llvm/trunk/lib/Target/PowerPC/PPCInstr64Bit.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/PPCInstr64Bit.td?rev=178973&r1=178972&r2=178973&view=diff
==============================================================================
--- llvm/trunk/lib/Target/PowerPC/PPCInstr64Bit.td (original)
+++ llvm/trunk/lib/Target/PowerPC/PPCInstr64Bit.td Sun Apr  7 01:30:47 2013
@@ -549,7 +549,7 @@ def LWAX : XForm_1<31, 341, (outs G8RC:$
                    PPC970_DGroup_Cracked;
 
 // Update forms.
-let mayLoad = 1 in {
+let mayLoad = 1, neverHasSideEffects = 1 in {
 def LHAU8 : DForm_1<43, (outs G8RC:$rD, ptr_rc_nor0:$ea_result),
                     (ins memri:$addr),
                     "lhau $rD, $addr", LdStLHAU,
@@ -666,7 +666,7 @@ def LDBRX : XForm_1<31,  532, (outs G8RC
                    "ldbrx $rD, $src", LdStLoad,
                    [(set i64:$rD, (PPClbrx xoaddr:$src, i64))]>, isPPC64;
 
-let mayLoad = 1, neverHasSideEffects = 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 = $ea_result">, isPPC64,
@@ -678,6 +678,7 @@ def LDUX : XForm_1<31, 53, (outs G8RC:$r
                    []>, RegConstraint<"$addr.ptrreg = $ea_result">,
                    NoEncode<"$ea_result">, isPPC64;
 }
+}
 
 def : Pat<(PPCload ixaddr:$src),
           (LD ixaddr:$src)>;





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