[llvm-branch-commits] [llvm] [PowerPC][GlobalMerge] Enable GlobalMerge by default on AIX (PR #101226)

[Chen Zheng via llvm-branch-commits]

================
@@ -500,7 +500,10 @@ void PPCPassConfig::addIRPasses() {
 }
 
 bool PPCPassConfig::addPreISel() {
-  if (EnableGlobalMerge)
+  if ((EnableGlobalMerge.getNumOccurrences() > 0)
+          ? EnableGlobalMerge
+          : (TM->getTargetTriple().isOSAIX() &&
+             getOptLevel() != CodeGenOptLevel::None))
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chenzheng1030 wrote:

Keep the check for `EnableGlobalMerge.getNumOccurrences()` looks correct to me 
: )

https://github.com/llvm/llvm-project/pull/101226
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