llvm-project

Commit Graph

Author	SHA1	Message	Date
Benjamin Kramer	548ffa274a	SelectionDAG: Teach FoldConstantArithmetic how to deal with vectors. This required disabling a PowerPC optimization that did the following: input: x = BUILD_VECTOR <i32 16, i32 16, i32 16, i32 16> lowered to: tmp = BUILD_VECTOR <i32 8, i32 8, i32 8, i32 8> x = ADD tmp, tmp The add now gets folded immediately and we're back at the BUILD_VECTOR we started from. I don't see a way to fix this currently so I left it disabled for now. Fix some trivially foldable X86 tests too. llvm-svn: 174325	2013-02-04 15:19:18 +00:00
Dan Gohman	c8054d90fb	Eliminate more uses of llvm-as and llvm-dis. llvm-svn: 81293	2009-09-09 00:09:15 +00:00
Chris Lattner	5e718e7431	Fix an altivec constant miscompilation that Duncan found through his work on legalizetypes. llvm-svn: 53410	2008-07-10 16:33:38 +00:00

Author

SHA1

Message

Date

Benjamin Kramer

548ffa274a

SelectionDAG: Teach FoldConstantArithmetic how to deal with vectors.

This required disabling a PowerPC optimization that did the following:
input:
x = BUILD_VECTOR <i32 16, i32 16, i32 16, i32 16>
lowered to:
tmp = BUILD_VECTOR <i32 8, i32 8, i32 8, i32 8>
x = ADD tmp, tmp

The add now gets folded immediately and we're back at the BUILD_VECTOR we
started from. I don't see a way to fix this currently so I left it disabled
for now.

Fix some trivially foldable X86 tests too.

llvm-svn: 174325

2013-02-04 15:19:18 +00:00

Dan Gohman

c8054d90fb

Eliminate more uses of llvm-as and llvm-dis.

llvm-svn: 81293

2009-09-09 00:09:15 +00:00

Chris Lattner

5e718e7431

Fix an altivec constant miscompilation that Duncan found through

his work on legalizetypes.

llvm-svn: 53410

2008-07-10 16:33:38 +00:00

3 Commits