Simon Pilgrim ddae161376 [DAGCombiner] Try to use SelectionDAG::isKnownToBeAPowerOfTwo instead of just APInt::isPowerOf2 ...

Generalize sdiv/udiv/srem/urem combines using APInt::isPowerOf2, which only works for const/splat-const values, to call SelectionDAG::isKnownToBeAPowerOfTwo instead which recognises many more cases.

Added a DAGCombiner::BuildLogBase2 helper since PowerOf2 combines often involve taking the log2 of such a value.

Differential Revision: https://reviews.llvm.org/D27714

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@289654 91177308-0d34-0410-b5e6-96231b3b80d8

2016-12-14 15:08:13 +00:00

..

AArch64

Add support for Samsung Exynos M3 (NFC)

2016-12-13 23:31:41 +00:00

AMDGPU

[Verifier] Add verification for TBAA metadata

2016-12-11 20:07:15 +00:00

ARM

[ARM] Fix typo in checking prefix

2016-12-14 00:02:03 +00:00

AVR

[AVR] Add a function instrumentation pass

2016-12-14 10:15:00 +00:00

BPF

Revert "In visitSTORE, always use FindBetterChain, rather than only when UseAA is enabled."

2016-12-09 17:18:24 +00:00

Generic

Add -O0 support for @llvm.invariant.group.barrier by discarding it if it gets to ISel.

2016-11-07 16:47:20 +00:00

Hexagon

Move .mir tests to appropriate directories

2016-12-09 19:08:15 +00:00

Inputs

[PR27284] Reverse the ownership between DICompileUnit and DISubprogram.

2016-04-15 15:57:41 +00:00

Lanai

Move .mir tests to appropriate directories

2016-12-09 19:08:15 +00:00

Mips

[mips] Fix compact branch hazard detection

2016-12-13 11:07:51 +00:00

MIR

AMDGPU: Fix handling of 16-bit immediates

2016-12-10 00:39:12 +00:00

MSP430

Revert "In visitSTORE, always use FindBetterChain, rather than only when UseAA is enabled."

2016-12-09 17:18:24 +00:00

NVPTX

[NVPTX] Remove NVPTXFavorNonGenericAddrSpaces pass.

2016-10-31 21:51:42 +00:00

PowerPC

[PowerPC] Fix logic dealing with nop after calls (and tail-call eligibility)

2016-12-14 07:24:50 +00:00

SPARC

ScheduleDAGInstrs: Add condjump deps to addSchedBarrierDeps()

2016-11-11 01:34:21 +00:00

SystemZ

Revert "In visitSTORE, always use FindBetterChain, rather than only when UseAA is enabled."

2016-12-09 17:18:24 +00:00

Thumb

Revert "In visitSTORE, always use FindBetterChain, rather than only when UseAA is enabled."

2016-12-09 17:18:24 +00:00

Thumb2

Revert "[Thumb] Teach ISel how to lower compares of AND bitmasks efficiently"

2016-11-03 14:08:01 +00:00

WebAssembly

[WebAssembly] Emit .import_global assembler directives

2016-12-01 00:11:15 +00:00

WinEH

Avoid infinite loops in branch folding

2016-12-12 23:05:38 +00:00

X86

[DAGCombiner] Try to use SelectionDAG::isKnownToBeAPowerOfTwo instead of just APInt::isPowerOf2

2016-12-14 15:08:13 +00:00

XCore

Revert "In visitSTORE, always use FindBetterChain, rather than only when UseAA is enabled."

2016-12-09 17:18:24 +00:00