Chris Lattner 7acc4b1281 Extend CanEvaluateZExtd to handle and/or/xor more aggressively in the ... BitsToClear case. This allows it to promote expressions which have an and/or/xor after the lshr, promoting cases like test2 (from PR4216) and test3 (random extample extracted from a spec benchmark). clang now compiles the code in PR4216 into: _test_bitfield: ## @test_bitfield movl %edi, %eax orl $194, %eax movl $4294902010, %ecx andq %rax, %rcx orl $32768, %edi andq $39936, %rdi movq %rdi, %rax orq %rcx, %rax ret instead of: _test_bitfield: ## @test_bitfield movl %edi, %eax orl $194, %eax movl $4294902010, %ecx andq %rax, %rcx shrl $8, %edi orl $128, %edi shlq $8, %rdi andq $39936, %rdi movq %rdi, %rax orq %rcx, %rax ret which is still not great, but is progress. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93145 91177308-0d34-0410-b5e6-96231b3b80d8		2010-01-11 04:05:13 +00:00
..
CMakeLists.txt	split and/or/xor out into one overly-large (2000LOC) file. However, I think	2010-01-05 07:50:36 +00:00
InstCombine.h	inline and remove the rest of commonIntCastTransforms.	2010-01-10 01:00:46 +00:00
InstCombineAddSub.cpp	reduce indentation	2010-01-05 20:56:24 +00:00
InstCombineAndOrXor.cpp	split and/or/xor out into one overly-large (2000LOC) file. However, I think	2010-01-05 07:50:36 +00:00
InstCombineCalls.cpp	Remove unnecessary dyn_cast and add a comment. Part of a WIP.	2010-01-08 21:37:11 +00:00
InstCombineCasts.cpp	Extend CanEvaluateZExtd to handle and/or/xor more aggressively in the	2010-01-11 04:05:13 +00:00
InstCombineCompares.cpp	tidy up some stuff duncan pointed out.	2010-01-08 17:48:19 +00:00
InstCombineLoadStoreAlloca.cpp	split out load/store/alloca.	2010-01-05 05:57:49 +00:00
InstCombineMulDivRem.cpp	Convert a ton of simple integer type equality tests to the new predicate.	2010-01-05 20:07:06 +00:00
InstCombinePHI.cpp	Add newline at EOF.	2010-01-05 13:32:48 +00:00
InstCombineSelect.cpp	Convert a ton of simple integer type equality tests to the new predicate.	2010-01-05 20:07:06 +00:00
InstCombineShifts.cpp	change the preferred canonical form for a sign extension to be	2010-01-10 07:08:30 +00:00
InstCombineSimplifyDemanded.cpp	move the 'SimplifyDemandedFoo' methods out to their own file, cutting 1K lines out of instcombine.cpp	2010-01-04 07:17:19 +00:00
InstCombineVectorOps.cpp	reduce indentation	2010-01-05 05:42:08 +00:00
InstCombineWorklist.h	remove a ton of unneeded LLVMContext stuff.	2010-01-04 07:02:48 +00:00
InstructionCombining.cpp	teach ComputeNumSignBits to look through PHI nodes.	2010-01-07 23:44:37 +00:00
Makefile