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Philip Reames fb4ffccacb If a conditional branch jumps to the same target, remove the condition 
Given that large parts of inst combine is restricted to instructions which have one use, getting rid of a use on the condition can help the effectiveness of the optimizer. Also, it allows the condition to potentially be deleted by instcombine rather than waiting for another pass.

I noticed this completely by accident in another test case. It's not anything that actually came from a real workload.

p.s. We should probably do the same thing for switch instructions.

Differential Revision: http://reviews.llvm.org/D8220



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231881 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-10 22:52:37 +00:00
autoconf Drop the hacks used for partial C99 math libraries. 2015-03-09 18:35:18 +00:00
bindings Go bindings: use MDNode::replaceAllUsesWith instead of MDTuple::replaceAllUsesWith. 2015-03-05 22:55:38 +00:00
cmake Add new LLVM_OPTIMIZED_TABLEGEN build setting which configures, builds and uses a release tablegen build when LLVM is configured with assertions enabled. 2015-03-10 20:48:02 +00:00
docs Introduce runtime unrolling disable matadata and use it to mark the scalar loop from vectorization. 2015-03-09 06:14:18 +00:00
examples Fix the build of the gold-plugin and examples. 2015-03-04 19:15:29 +00:00
include Remove the use of the subtarget in MCCodeEmitter creation and 2015-03-10 22:03:14 +00:00
lib If a conditional branch jumps to the same target, remove the condition 2015-03-10 22:52:37 +00:00
projects
test If a conditional branch jumps to the same target, remove the condition 2015-03-10 22:52:37 +00:00
tools Remove the use of the subtarget in MCCodeEmitter creation and 2015-03-10 22:03:14 +00:00
unittests DataLayout is mandatory, update the API to reflect it with references. 2015-03-10 02:37:25 +00:00
utils Teach raw_ostream to accept SmallString. 2015-03-10 07:33:23 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitignore
CMakeLists.txt Add new LLVM_OPTIMIZED_TABLEGEN build setting which configures, builds and uses a release tablegen build when LLVM is configured with assertions enabled. 2015-03-10 20:48:02 +00:00
CODE_OWNERS.TXT [CODE_OWNERS] Change the ownership of register allocators. 2015-03-05 22:15:17 +00:00
configure Drop the hacks used for partial C99 math libraries. 2015-03-09 18:35:18 +00:00
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