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Commit Graph

Author	SHA1	Message	Date
NAKAMURA Takumi	378f3188a0	llvm/test/CodeGen/X86/shift-pcmp.ll: Tweak to appease FileCheck. "CHECK-LABEL" doesn't identify labels magically and CHECK-LABEL behaves free from other contexts. For targeting pecoff, ".def foo" appears before ".short 32". .def foo; ... .LCPI0_0: .short 32 foo: CHECK-LABEL seeks not from ".short 32" but from the top of the input. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201931 91177308-0d34-0410-b5e6-96231b3b80d8	2014-02-22 07:27:04 +00:00
Quentin Colombet	0206b30ea6	[DAGCombiner] PCMP* sets its result to all ones or zeros so we can AND with the shifted mask rather than masking and shifting separately. The patch adds this transformation to the DAGCombiner: (shl (and (setcc:i8v16 ...) N01C) N1C) -> (and (setcc:i8v16 ...) N01C<<N1C) <rdar://problem/16054492> Patch by Adam Nemet <anemet@apple.com> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201906 91177308-0d34-0410-b5e6-96231b3b80d8	2014-02-21 23:42:41 +00:00

Author

SHA1

Message

Date

NAKAMURA Takumi

378f3188a0

llvm/test/CodeGen/X86/shift-pcmp.ll: Tweak to appease FileCheck. "CHECK-LABEL" doesn't identify labels magically and CHECK-LABEL behaves free from other contexts.

For targeting pecoff, ".def foo" appears before ".short 32".

          .def    foo;
  ...
  .LCPI0_0:
          .short  32
  foo:

CHECK-LABEL seeks not from ".short 32" but from the top of the input.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201931 91177308-0d34-0410-b5e6-96231b3b80d8

2014-02-22 07:27:04 +00:00

Quentin Colombet

0206b30ea6

[DAGCombiner] PCMP* sets its result to all ones or zeros so we can AND with the

shifted mask rather than masking and shifting separately.

The patch adds this transformation to the DAGCombiner:

  (shl (and (setcc:i8v16 ...) N01C) N1C) -> (and (setcc:i8v16 ...) N01C<<N1C)

<rdar://problem/16054492>

Patch by Adam Nemet <anemet@apple.com>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201906 91177308-0d34-0410-b5e6-96231b3b80d8

2014-02-21 23:42:41 +00:00

2 Commits