Hal Finkel 0b19b561e0 [PowerPC] Handle cmp op promotion for SELECT[_CC] nodes in PPCTL::DAGCombineExtBoolTrunc ... PPCTargetLowering::DAGCombineExtBoolTrunc contains logic to remove unwanted truncations and extensions when dealing with nodes of the form: zext(binary-ops(binary-ops(trunc(x), trunc(y)), ...) There was a FIXME in the implementation (now removed) regarding the fact that the function would abort the transformations if any of the non-output operands of a SELECT or SELECT_CC node would need to be promoted (because they were also output operands, for example). As a result, we continued to generate unnecessary zero-extends for code such as this: unsigned foo(unsigned a, unsigned b) { return (a <= b) ? a : b; } which would produce: cmplw 0, 3, 4 isel 3, 4, 3, 1 rldicl 3, 3, 0, 32 blr and now we produce: cmplw 0, 3, 4 isel 3, 4, 3, 1 blr which is better in the obvious way. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224213 91177308-0d34-0410-b5e6-96231b3b80d8		2014-12-14 05:53:19 +00:00
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Analysis	ValueTracking: Don't recurse too deeply in computeKnownBitsFromAssume	2014-12-12 23:59:29 +00:00
AsmParser
Bitcode
CodeGen	Rename argument strings of codegen passes to avoid collisions with command line	2014-12-13 04:52:04 +00:00
DebugInfo
ExecutionEngine
IR
IRReader
LineEditor
Linker
LTO
MC	Silencing a -Wsign-compare warning; NFC.	2014-12-13 16:55:02 +00:00
Object
Option
ProfileData
Support	Pass EC by reference to MemoryBufferMMapFile to return error code.	2014-12-12 22:27:53 +00:00
TableGen
Target	[PowerPC] Handle cmp op promotion for SELECT[_CC] nodes in PPCTL::DAGCombineExtBoolTrunc	2014-12-14 05:53:19 +00:00
Transforms
CMakeLists.txt
LLVMBuild.txt
Makefile