Benjamin Kramer 1db071f0da Teach instcombine to transform ... (X >s -1) ? C1 : C2 and (X <s 0) ? C2 : C1 into ((X >>s 31) & (C2 - C1)) + C1, avoiding the conditional. This optimization could be extended to take non-const C1 and C2 but we better stay conservative to avoid code size bloat for now. for int sel(int n) { return n >= 0 ? 60 : 100; } we now generate sarl $31, %edi andl $40, %edi leal 60(%rdi), %eax instead of testl %edi, %edi movl $60, %ecx movl $100, %eax cmovnsl %ecx, %eax git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107866 91177308-0d34-0410-b5e6-96231b3b80d8		2010-07-08 11:39:10 +00:00
..
CMakeLists.txt
InstCombine.h	use ArgOperand API, also tighten the type of visitFree to make this work out smoothly	2010-06-24 12:21:15 +00:00
InstCombineAddSub.cpp	Floating-point add, sub, and mul are now spelled fadd, fsub, and fmul,	2010-03-02 01:11:08 +00:00
InstCombineAndOrXor.cpp	Minor code simplification.	2010-04-09 14:53:59 +00:00
InstCombineCalls.cpp	use getArgOperand (corrected by CallInst::ArgOffset) instead of getOperand	2010-06-30 12:38:26 +00:00
InstCombineCasts.cpp	Fix instcombine's handling of alloca to accept non-i32 types.	2010-05-28 04:33:04 +00:00
InstCombineCompares.cpp	use ArgOperand API	2010-06-24 16:11:44 +00:00
InstCombineLoadStoreAlloca.cpp	Move FindAvailableLoadedValue isSafeToLoadUnconditionally out of	2010-05-28 16:19:17 +00:00
InstCombineMulDivRem.cpp	Floating-point add, sub, and mul are now spelled fadd, fsub, and fmul,	2010-03-02 01:11:08 +00:00
InstCombinePHI.cpp	fix PR6512, a case where instcombine would incorrectly merge loads	2010-03-05 18:53:28 +00:00
InstCombineSelect.cpp	Teach instcombine to transform	2010-07-08 11:39:10 +00:00
InstCombineShifts.cpp	use ArgOperand API	2010-06-24 00:44:01 +00:00
InstCombineSimplifyDemanded.cpp	use ArgOperand API	2010-06-28 16:45:00 +00:00
InstCombineVectorOps.cpp
InstCombineWorklist.h	I got tired of VISIBILITY_HIDDEN colliding with the gcc enum. Rename it	2010-05-11 20:16:09 +00:00
InstructionCombining.cpp	use ArgOperand API, also tighten the type of visitFree to make this work out smoothly	2010-06-24 12:21:15 +00:00
Makefile