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llvm/test/Transforms/JumpThreading
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Benjamin Kramer c11b107f21 JumpThreading: Turn a select instruction into branching if it allows to thread one half of the select. 
This is a common pattern coming out of simplifycfg generating gross code.

a:                                       ; preds = %entry
  %sel = select i1 %cmp1, double %add, double 0.000000e+00
  br label %b

b:
  %cond5 = phi double [ %sel, %a ], [ %sub, %entry ]
  %cmp6 = fcmp oeq double %cond5, 0.000000e+00
  br i1 %cmp6, label %if.then, label %if.end

becomes

a:
  br i1 %cmp1, label %b, label %if.then

b:
  %cond5 = phi double [ %sub, %entry ], [ %add, %a ]
  %cmp6 = fcmp oeq double %cond5, 0.000000e+00
  br i1 %cmp6, label %if.then, label %if.end

Skipping block b completely if possible.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187880 91177308-0d34-0410-b5e6-96231b3b80d8
2013-08-07 10:29:38 +00:00
..
2008-11-27-EntryMunge.ll Convert all tests using TCL-style quoting to use shell-style quoting. 2012-07-02 12:47:22 +00:00
2010-08-26-and.ll Remove dead option from tests. 2010-09-14 21:03:40 +00:00
2011-04-02-SimplifyDeadBlock.ll PR9446: RecursivelyDeleteTriviallyDeadInstructions can delete the instruction 2011-04-02 22:45:17 +00:00
2011-04-14-InfLoop.ll TBAA: remove !tbaa from testing cases if not used. 2013-04-30 17:52:57 +00:00
2012-07-19-NoSuccessorIndirectBr.ll Fix assertion in jump threading (PR13405). 2012-07-20 10:36:17 +00:00
and-and-cond.ll Re-apply r124518 with fix. Watch out for invalidated iterator. 2011-01-29 04:46:23 +00:00
and-cond.ll Re-apply r124518 with fix. Watch out for invalidated iterator. 2011-01-29 04:46:23 +00:00
basic.ll Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. 2013-07-14 01:42:54 +00:00
branch-no-const.ll Change tests from "opt %s" to "opt < %s" so that opt doesn't see the 2009-09-11 18:01:28 +00:00
compare.ll Fix the remaining TCL-style quotes found in the testsuite. This is 2012-07-02 19:09:46 +00:00
crash.ll Add a test case for PR14233. 2012-11-01 10:26:36 +00:00
degenerate-phi.ll Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2012-12-30 02:33:22 +00:00
indirectbr.ll Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. 2013-07-14 01:42:54 +00:00
lit.local.cfg Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed. 2012-02-16 06:28:33 +00:00
lvi-load.ll Remove dead option from tests. 2010-09-14 21:03:40 +00:00
no-irreducible-loops.ll Convert all tests using TCL-style quoting to use shell-style quoting. 2012-07-02 12:47:22 +00:00
or-undef.ll Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID 2012-12-30 01:28:40 +00:00
phi-eq.ll formatting change: strip debug info from test 2012-05-10 16:55:31 +00:00
pr9331.ll Fix PR9331. Simplified version of a patch by Jakub Staszak. 2011-03-08 12:39:03 +00:00
select.ll JumpThreading: Turn a select instruction into branching if it allows to thread one half of the select. 2013-08-07 10:29:38 +00:00
thread-loads.ll Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. 2013-07-14 01:42:54 +00:00