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Commit Graph

Author	SHA1	Message	Date
Dinesh Dwivedi	95f0d51bd3	This removes TODO added in http://reviews.llvm.org/D3658 The patch transforms ABS(NABS(X)) -> ABS(X) NABS(ABS(X)) -> NABS(X) Differential Revision: http://reviews.llvm.org/D4040 llvm-svn: 210782	2014-06-12 14:06:00 +00:00
Dinesh Dwivedi	3217b6c661	Added select flavour for ABS and NEG(ABS) This patch can identify ABS(X) ==> (X >s 0) ? X : -X and (X >s -1) ? X : -X ABS(X) ==> (X <s 0) ? -X : X and (X <s 1) ? -X : X NABS(X) ==> (X >s 0) ? -X : X and (X >s -1) ? -X : X NABS(X) ==> (X <s 0) ? X : -X and (X <s 1) ? X : -X and can transform ABS(ABS(X)) -> ABS(X) NABS(NABS(X)) -> NABS(X) Differential Revision: http://reviews.llvm.org/D3658 llvm-svn: 210312	2014-06-06 06:54:45 +00:00

Author

SHA1

Message

Date

Dinesh Dwivedi

95f0d51bd3

This removes TODO added in http://reviews.llvm.org/D3658

The patch transforms

ABS(NABS(X)) -> ABS(X)
NABS(ABS(X)) -> NABS(X)

Differential Revision: http://reviews.llvm.org/D4040

llvm-svn: 210782

2014-06-12 14:06:00 +00:00

Dinesh Dwivedi

3217b6c661

Added select flavour for ABS and NEG(ABS)

This patch can identify 
  ABS(X) ==> (X >s 0) ? X : -X and (X >s -1) ? X : -X
  ABS(X) ==> (X <s 0) ? -X : X and (X <s 1) ? -X : X
  NABS(X) ==> (X >s 0) ? -X : X and (X >s -1) ? -X : X
  NABS(X) ==> (X <s 0) ? X : -X and (X <s 1) ? X : -X
  
and can transform
  ABS(ABS(X)) -> ABS(X)
  NABS(NABS(X)) -> NABS(X)
  
Differential Revision: http://reviews.llvm.org/D3658

llvm-svn: 210312

2014-06-06 06:54:45 +00:00

2 Commits