llvm/test/Transforms/InstCombine, branch release_30

Merging r143437:

2011-11-01T04:51:01Z

------------------------------------------------------------------------ r143437 | efriedma | 2011-10-31 21:49:29 -0700 (Mon, 31 Oct 2011) | 3 lines Make sure we use the right insertion point when instcombine replaces a PHI with another instruction. (Specifically, don't insert an arbitrary instruction before a PHI.) Fixes PR11275. ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_30@143438 91177308-0d34-0410-b5e6-96231b3b80d8

Merging r142168:

2011-10-19T22:11:55Z

------------------------------------------------------------------------ r142168 | chandlerc | 2011-10-16 18:11:57 -0700 (Sun, 16 Oct 2011) | 8 lines Add a routine to swap branch instruction operands, and update any profile metadata at the same time. Use it to preserve metadata attached to a branch when re-writing it in InstCombine. Add metadata to the canonicalize_branch InstCombine test, and check that it is tranformed correctly. Reviewed by Nick Lewycky! ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_30@142545 91177308-0d34-0410-b5e6-96231b3b80d8

Added a testcase for r141599, rdar://problem/10063881.

2011-10-11T01:32:10Z

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141628 91177308-0d34-0410-b5e6-96231b3b80d8

Revert 141203. InstCombine is looping on unit tests.

2011-10-05T20:44:29Z

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141209 91177308-0d34-0410-b5e6-96231b3b80d8

Update InstCombine worklist after instruction transform is complete.

2011-10-05T20:05:00Z

When updating the worklist for InstCombine, the Add/AddUsersToWorklist functions may access the instruction(s) being added, for debug output for example. If the instructions aren't yet added to the basic block, this can result in a crash. Finish the instruction transformation before adjusting the worklist instead. rdar://10238555 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141203 91177308-0d34-0410-b5e6-96231b3b80d8

Add a new icmp+select optz'n. Also shows off the load(cst) folding added in

2011-10-02T10:37:37Z

r140966. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140969 91177308-0d34-0410-b5e6-96231b3b80d8

float comparison to double 'zero' constant can just be a float 'zero.'

2011-09-30T18:45:50Z

InstCombine was incorrectly considering the conversion of the constant zero to be unsafe. We want to transform: define float @bar(float %x) nounwind readnone optsize ssp { %conv = fpext float %x to double %cmp = fcmp olt double %conv, 0.000000e+00 %conv1 = zext i1 %cmp to i32 %conv2 = sitofp i32 %conv1 to float ret float %conv2 } Into: define float @bar(float %x) nounwind readnone optsize ssp { %cmp = fcmp olt float %x, 0.000000e+00 ; <---- This %conv1 = zext i1 %cmp to i32 %conv2 = sitofp i32 %conv1 to float ret float %conv2 } rdar://10215914 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140869 91177308-0d34-0410-b5e6-96231b3b80d8

Add forgotten tests that the cleanup flag is cleared if there

2011-09-30T17:00:34Z

is a catch-all landingpad clause. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140858 91177308-0d34-0410-b5e6-96231b3b80d8

Inlining often produces landingpad instructions with repeated

2011-09-30T13:12:16Z

catch or repeated filter clauses. Teach instcombine a bunch of tricks for simplifying landingpad clauses. Currently the code only recognizes the GNU C++ and Ada personality functions, but that doesn't stop it doing a bunch of "generic" transforms which are hopefully fine for any real-world personality function. If these "generic" transforms turn out not to be generic, they can always be conditioned on the personality function. Probably someone should add the ObjC++ personality function. I didn't as I don't know anything about it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140852 91177308-0d34-0410-b5e6-96231b3b80d8

Stop emitting instructions with the name "tmp" they eat up memory and have to be uniqued, without any benefit.

2011-09-27T20:39:19Z

If someone prefers %tmp42 to %42, run instnamer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140634 91177308-0d34-0410-b5e6-96231b3b80d8