bcm5719-llvm - Project Ortega BCM5719 LLVM

	Commit message (Collapse)	Author	Age	Files	Lines
*	Besides removing phi cycles that reduce to a single value, also remove dead	Bob Wilson	2010-02-13	1	-20/+68
\| \| \| \| \| \| \| \|	phi cycles. Adjust a few tests to keep dead instructions from being optimized away. This (together with my previous change for phi cycles) fixes Apple radar 7627077. llvm-svn: 96057
*	Add a new pass on machine instructions to optimize away PHI cycles that	Bob Wilson	2010-02-12	1	-0/+141
	reduce down to a single value. InstCombine already does this transformation but DAG legalization may introduce new opportunities. This has turned out to be important for ARM where 64-bit values are split up during type legalization: InstCombine is not able to remove the PHI cycles on the 64-bit values but the separate 32-bit values can be optimized. I measured the compile time impact of this (running llc on 176.gcc) and it was not significant. llvm-svn: 95951