cctest/test-deoptimization/DeoptimizeCompare was failing on PPC because the...

cctest/test-deoptimization/DeoptimizeCompare was failing on PPC because the path that is optimized for isel incorrectly used integer values instead of Smi's

BUG=

Review URL: https://codereview.chromium.org/996223002

Cr-Commit-Position: refs/heads/master@{#27136}

src/ppc/code-stubs-ppc.cc

@@ -3563,8 +3563,8 @@ void StringHelper::GenerateCompareFlatOneByteStrings(
   // Conditionally update the result based either on length_delta or
   // the last comparion performed in the loop above.
   if (CpuFeatures::IsSupported(ISELECT)) {
-    __ li(r4, Operand(GREATER));
-    __ li(r5, Operand(LESS));
+    __ LoadSmiLiteral(r4, Smi::FromInt(GREATER));
+    __ LoadSmiLiteral(r5, Smi::FromInt(LESS));
     __ isel(eq, r3, r0, r4);
     __ isel(lt, r3, r5, r3);
     __ Ret();

test/cctest/cctest.status

@@ -407,7 +407,6 @@
 
   # issues to be investigated based on latest uplevel
   'test-run-machops/RunWord64EqualInBranchP': [SKIP],
-  'test-deoptimization/DeoptimizeCompare': [SKIP],
 
   # will not pass until we agree/implement changes to serializce.cc
   'test-serialize/SerializeInternalReference': [SKIP],