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Commit Graph

11 Commits

Author SHA1 Message Date
Chris Lattner
297259f6f1 improve the setcc -> setcc_carry optimization to happen more
consistently by moving it out of lowering into dag combine.

Add some missing patterns for matching away extended versions of setcc_c.

llvm-svn: 122201
2010-12-19 22:08:31 +00:00
Chris Lattner
8cb4abbc0e fix the buildvector->insertp[sd] logic to not always create a redundant
insertp[sd] $0, which is a noop.  Before:

_f32:                                   ## @f32
	pshufd	$1, %xmm1, %xmm2
	pshufd	$1, %xmm0, %xmm3
	addss	%xmm2, %xmm3
	addss	%xmm1, %xmm0
                                        ## kill: XMM0<def> XMM0<kill> XMM0<def>
	insertps	$0, %xmm0, %xmm0
	insertps	$16, %xmm3, %xmm0
	ret

after:

_f32:                                   ## @f32
	movdqa	%xmm0, %xmm2
	addss	%xmm1, %xmm2
	pshufd	$1, %xmm1, %xmm1
	pshufd	$1, %xmm0, %xmm3
	addss	%xmm1, %xmm3
	movdqa	%xmm2, %xmm0
	insertps	$16, %xmm3, %xmm0
	ret

The extra movs are due to a random (poor) scheduling decision.

llvm-svn: 112379
2010-08-28 17:59:08 +00:00
Dan Gohman
5736cd1e47 Start function numbering at 0.
llvm-svn: 101638
2010-04-17 16:29:15 +00:00
Dan Gohman
df2896d609 Eliminate more uses of llvm-as and llvm-dis.
llvm-svn: 81290
2009-09-08 23:54:48 +00:00
Eric Christopher
88c1b51020 Add a couple more tests for the ptest intrinsics to make sure we're
grabbing them all correctly.

llvm-svn: 77413
2009-07-29 00:51:15 +00:00
Eric Christopher
c7b97d1f03 Add support for gcc __builtin_ia32_ptest{z,c,nzc} intrinsics. Lower
to ptest instruction plus setcc. Revamp ptest instruction. Add test.

llvm-svn: 77407
2009-07-29 00:28:05 +00:00
Eric Christopher
24a620ec3d Move insertps tests to sse41 combo test file, convert to filecheck
format and add an extract/insert test.

llvm-svn: 76994
2009-07-24 19:24:26 +00:00
Chris Lattner
7fd20e69f1 merge one more sse41 test into sse41.ll
llvm-svn: 76853
2009-07-23 04:49:39 +00:00
Chris Lattner
efe5b9aaf8 merge another sse41 test into sse41.ll
llvm-svn: 76852
2009-07-23 04:43:48 +00:00
Chris Lattner
c59ca858c8 merge sse41-pmovx.ll into sse41.ll
llvm-svn: 76850
2009-07-23 04:39:09 +00:00
Chris Lattner
313c95ea84 change a test to run in filecheck style. Rename it to be a general
dumping ground of various SSE4.1 tests, since filecheck can reasonably
handle them all in one file.  Generalize it to check x86-64 stuff as
well since it has a different ABI (a convenient way to test both the 
reg and mem forms of these instructions).

llvm-svn: 76848
2009-07-23 04:33:02 +00:00