PPC: Reland Update V8 DEPS.

Port c63e50ed

Original commit message:
    Rolling v8/tools/clang to 58128abd44c22255def1163d30bc9bb2cc85e15c

    Reland after https://codereview.chromium.org/1241643002/

R=machenbach@chromium.org, dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1240833002

Cr-Commit-Position: refs/heads/master@{#29704}

src/ppc/code-stubs-ppc.cc

@@ -3189,12 +3189,11 @@ void StringCharCodeAtGenerator::GenerateSlow(
 
 void StringCharFromCodeGenerator::GenerateFast(MacroAssembler* masm) {
   // Fast case of Heap::LookupSingleCharacterStringFromCode.
-  DCHECK(base::bits::IsPowerOfTwo32(String::kMaxOneByteCharCode + 1));
-  __ LoadSmiLiteral(r0, Smi::FromInt(~String::kMaxOneByteCharCode));
+  DCHECK(base::bits::IsPowerOfTwo32(String::kMaxOneByteCharCodeU + 1));
+  __ LoadSmiLiteral(r0, Smi::FromInt(~String::kMaxOneByteCharCodeU));
   __ ori(r0, r0, Operand(kSmiTagMask));
-  __ and_(r0, code_, r0);
-  __ cmpi(r0, Operand::Zero());
-  __ bne(&slow_case_);
+  __ and_(r0, code_, r0, SetRC);
+  __ bne(&slow_case_, cr0);
 
   __ LoadRoot(result_, Heap::kSingleCharacterStringCacheRootIndex);
   // At this point code register contains smi tagged one-byte char code.

src/ppc/full-codegen-ppc.cc

@@ -4444,10 +4444,9 @@ void FullCodeGenerator::EmitHasCachedArrayIndex(CallRuntime* expr) {
   __ lwz(r3, FieldMemOperand(r3, String::kHashFieldOffset));
   // PPC - assume ip is free
   __ mov(ip, Operand(String::kContainsCachedArrayIndexMask));
-  __ and_(r0, r3, ip);
-  __ cmpi(r0, Operand::Zero());
+  __ and_(r0, r3, ip, SetRC);
   PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
-  Split(eq, if_true, if_false, fall_through);
+  Split(eq, if_true, if_false, fall_through, cr0);
 
   context()->Plug(if_true, if_false);
 }