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llvm-6502/lib/Transforms/InstCombine
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Sanjay Patel 0ff4eb684f Optimize square root squared (PR21126). 
When unsafe-fp-math is enabled, we can turn sqrt(X) * sqrt(X) into X.

This can happen in the real world when calculating x ** 3/2. This occurs
in test-suite/SingleSource/Benchmarks/BenchmarkGame/n-body.c.

Differential Revision: http://reviews.llvm.org/D5584



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218906 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-02 21:10:54 +00:00
..
CMakeLists.txt Tidy up a bit. No functional change. 2013-04-05 21:20:12 +00:00
InstCombine.h Revert r218721, r218735. 2014-10-01 10:07:28 +00:00
InstCombineAddSub.cpp Make use of @llvm.assume in ValueTracking (computeKnownBits, etc.) 2014-09-07 18:57:58 +00:00
InstCombineAndOrXor.cpp Make use of @llvm.assume in ValueTracking (computeKnownBits, etc.) 2014-09-07 18:57:58 +00:00
InstCombineCalls.cpp Make use of @llvm.assume in ValueTracking (computeKnownBits, etc.) 2014-09-07 18:57:58 +00:00
InstCombineCasts.cpp Make use of @llvm.assume in ValueTracking (computeKnownBits, etc.) 2014-09-07 18:57:58 +00:00
InstCombineCompares.cpp Revert r218721, r218735. 2014-10-01 10:07:28 +00:00
InstCombineLoadStoreAlloca.cpp Make use of @llvm.assume in ValueTracking (computeKnownBits, etc.) 2014-09-07 18:57:58 +00:00
InstCombineMulDivRem.cpp Optimize square root squared (PR21126). 2014-10-02 21:10:54 +00:00
InstCombinePHI.cpp Make use of @llvm.assume in ValueTracking (computeKnownBits, etc.) 2014-09-07 18:57:58 +00:00
InstCombineSelect.cpp Make use of @llvm.assume in ValueTracking (computeKnownBits, etc.) 2014-09-07 18:57:58 +00:00
InstCombineShifts.cpp Make use of @llvm.assume in ValueTracking (computeKnownBits, etc.) 2014-09-07 18:57:58 +00:00
InstCombineSimplifyDemanded.cpp Add additional patterns for @llvm.assume in ValueTracking 2014-09-07 19:21:07 +00:00
InstCombineVectorOps.cpp fixed some typos 2014-07-07 22:13:58 +00:00
InstCombineWorklist.h Canonicalize header guards into a common format. 2014-08-13 16:26:38 +00:00
InstructionCombining.cpp Revert r218721, r218735. 2014-10-01 10:07:28 +00:00
LLVMBuild.txt LLVMBuild: Remove trailing newline, which irked me. 2011-12-12 19:48:00 +00:00
Makefile