Quentin Colombet e644b7743b Fix a bug in IfConverter with nested predicates. ...

Prior to this patch, IfConverter may widen the cases where a sequence of
instructions were executed because of the way it uses nested predicates. This
result in incorrect execution.

For instance, Let A be a basic block that flows conditionally into B and B be a
predicated block.
B can be predicated with A.BrToBPredicate into A iff B.Predicate is less
"permissive" than A.BrToBPredicate, i.e., iff A.BrToBPredicate subsumes
B.Predicate.

The IfConverter was checking the opposite: B.Predicate subsumes
A.BrToBPredicate.

<rdar://problem/14379453>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187071 91177308-0d34-0410-b5e6-96231b3b80d8

2013-07-24 20:20:37 +00:00

..

AArch64

Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally.

2013-07-14 06:24:09 +00:00

ARM

Fix a bug in IfConverter with nested predicates.

2013-07-24 20:20:37 +00:00

CPP

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Generic

Debug Info: clean up usage of Verify.

2013-06-28 05:43:10 +00:00

Hexagon

Debug Info: improve the Finder.

2013-07-24 17:10:09 +00:00

Inputs

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MBlaze

Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally.

2013-07-14 06:24:09 +00:00

Mips

Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally.

2013-07-14 06:24:09 +00:00

MSP430

Use conventional syntax for branches.

2013-07-14 18:19:44 +00:00

NVPTX

[NVPTX] Use approximate FP ops when unsafe-fp-math is used, and append

2013-07-22 12:18:04 +00:00

PowerPC

Debug Info: improve the Finder.

2013-07-24 17:10:09 +00:00

R600

DAGCombiner: Pass the correct type to TargetLowering::isF(Abs|Neg)Free

2013-07-23 23:55:03 +00:00

SI

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SPARC

Update to more CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change.

2013-07-18 22:47:09 +00:00

SystemZ

[SystemZ] Add tests for ALHSIK and ALGHSIK

2013-07-19 16:44:32 +00:00

Thumb

Debug Info: improve the Finder.

2013-07-24 17:10:09 +00:00

Thumb2

Refactor AnalyzeBranch on ARM. The previous version did not always analyze

2013-07-19 23:52:47 +00:00

X86

Debug Info: improve the Finder.

2013-07-24 17:10:09 +00:00

XCore

Disambiguate function names in some CodeGen tests. (Some tests were using function names that also were names of instructions and/or doing other unusual things that were making the test not amenable to otherwise scriptable pattern matching.) No functionality change.

2013-07-18 22:29:15 +00:00