}
void SystemZPassConfig::addPreEmitPass() {
+
+ // Do instruction shortening before compare elimination because some
+ // vector instructions will be shortened into opcodes that compare
+ // elimination recognizes.
+ if (getOptLevel() != CodeGenOpt::None)
+ addPass(createSystemZShortenInstPass(getSystemZTargetMachine()), false);
+
// We eliminate comparisons here rather than earlier because some
// transformations can change the set of available CC values and we
// generally want those transformations to have priority. This is
// preventing that would be a win or not.
if (getOptLevel() != CodeGenOpt::None)
addPass(createSystemZElimComparePass(getSystemZTargetMachine()), false);
- if (getOptLevel() != CodeGenOpt::None)
- addPass(createSystemZShortenInstPass(getSystemZTargetMachine()), false);
addPass(createSystemZLongBranchPass(getSystemZTargetMachine()));
}