Arnold Schwaighofer e60e6fc70f X86 cost model: Adjust cost for custom lowered vector multiplies ... This matters for example in following matrix multiply: int **mmult(int rows, int cols, int **m1, int **m2, int **m3) { int i, j, k, val; for (i=0; i<rows; i++) { for (j=0; j<cols; j++) { val = 0; for (k=0; k<cols; k++) { val += m1[i][k] * m2[k][j]; } m3[i][j] = val; } } return(m3); } Taken from the test-suite benchmark Shootout. We estimate the cost of the multiply to be 2 while we generate 9 instructions for it and end up being quite a bit slower than the scalar version (48% on my machine). Also, properly differentiate between avx1 and avx2. On avx-1 we still split the vector into 2 128bits and handle the subvector muls like above with 9 instructions. Only on avx-2 will we have a cost of 9 for v4i64. I changed the test case in test/Transforms/LoopVectorize/X86/avx1.ll to use an add instead of a mul because with a mul we now no longer vectorize. I did verify that the mul would be indeed more expensive when vectorized with 3 kernels: for (i ...) r += a[i] * 3; for (i ...) m1[i] = m1[i] * 3; // This matches the test case in avx1.ll and a matrix multiply. In each case the vectorized version was considerably slower. radar://13304919 llvm-svn: 176403		2013-03-02 04:02:52 +00:00
..
ARM	Adding simple cast cost to ARM	2013-01-29 23:31:38 +00:00
X86	X86 cost model: Adjust cost for custom lowered vector multiplies	2013-03-02 04:02:52 +00:00
12-12-11-if-conv.ll	Remove the -licm pass from the loop vectorizer test because the loop vectorizer does it now.	2013-01-09 01:20:59 +00:00
2012-10-20-infloop.ll	Force a fixed unroll count on the target independent tests.	2013-01-05 00:58:48 +00:00
2012-10-22-isconsec.ll	Force a fixed unroll count on the target independent tests.	2013-01-05 00:58:48 +00:00
bzip_reverse_loops.ll	Add support for reverse pointer induction variables. These are loops that contain pointers that count backwards.	2013-01-23 01:35:00 +00:00
calloc.ll	Remove the -licm pass from the loop vectorizer test because the loop vectorizer does it now.	2013-01-09 01:20:59 +00:00
cast-induction.ll	Remove the -licm pass from the loop vectorizer test because the loop vectorizer does it now.	2013-01-09 01:20:59 +00:00
cpp-new-array.ll	Remove the -licm pass from the loop vectorizer test because the loop vectorizer does it now.	2013-01-09 01:20:59 +00:00
flags.ll	Remove the -licm pass from the loop vectorizer test because the loop vectorizer does it now.	2013-01-09 01:20:59 +00:00
float-reduction.ll	LoopVectorizer: Add support for floating point reductions	2013-01-07 23:13:00 +00:00
gcc-examples.ll	Remove the -licm pass from the loop vectorizer test because the loop vectorizer does it now.	2013-01-09 01:20:59 +00:00
global_alias.ll	Some more tests for the global structure vectorizer	2013-02-23 12:48:30 +00:00
i8-induction.ll	Fix PR14547. Handle induction variables of small sizes smaller than i32 (i8 and i16).	2013-01-13 07:56:29 +00:00
if-conv-crash.ll	Force a fixed unroll count on the target independent tests.	2013-01-05 00:58:48 +00:00
if-conversion-reduction.ll	Remove the -licm pass from the loop vectorizer test because the loop vectorizer does it now.	2013-01-09 01:20:59 +00:00
if-conversion.ll	Remove the -licm pass from the loop vectorizer test because the loop vectorizer does it now.	2013-01-09 01:20:59 +00:00
increment.ll	Remove the -licm pass from the loop vectorizer test because the loop vectorizer does it now.	2013-01-09 01:20:59 +00:00
induction_plus.ll	Force a fixed unroll count on the target independent tests.	2013-01-05 00:58:48 +00:00
intrinsic.ll	LoopVectorize: Vectorize math builtin calls.	2013-02-27 15:24:19 +00:00
lcssa-crash.ll	Force a fixed unroll count on the target independent tests.	2013-01-05 00:58:48 +00:00
lit.local.cfg
no_int_induction.ll	Remove the -licm pass from the loop vectorizer test because the loop vectorizer does it now.	2013-01-09 01:20:59 +00:00
nofloat.ll	Remove the -licm pass from the loop vectorizer test because the loop vectorizer does it now.	2013-01-09 01:20:59 +00:00
non-const-n.ll	Remove the -licm pass from the loop vectorizer test because the loop vectorizer does it now.	2013-01-09 01:20:59 +00:00
nsw-crash.ll	LoopVectorizer: Fix a bug in the vectorization of BinaryOperators. The BinaryOperator can be folded to an Undef, and we don't want to set NSW flags to undef vals.	2013-01-10 17:34:39 +00:00
phi-hang.ll	LoopVectorize: Don't hang forever if a PHI only has skipped PHI uses.	2013-03-01 19:07:31 +00:00
ptr_loops.ll	Add support for reverse pointer induction variables. These are loops that contain pointers that count backwards.	2013-01-23 01:35:00 +00:00
read-only.ll	Remove the -licm pass from the loop vectorizer test because the loop vectorizer does it now.	2013-01-09 01:20:59 +00:00
reduction.ll	Remove the -licm pass from the loop vectorizer test because the loop vectorizer does it now.	2013-01-09 01:20:59 +00:00
runtime-check.ll	LoopVectorizer: Emit memory checks into their own basic block.	2013-01-19 13:57:58 +00:00
same-base-access.ll	Remove the -licm pass from the loop vectorizer test because the loop vectorizer does it now.	2013-01-09 01:20:59 +00:00
scalar-select.ll	Remove the -licm pass from the loop vectorizer test because the loop vectorizer does it now.	2013-01-09 01:20:59 +00:00
simple-unroll.ll	Remove the -licm pass from the loop vectorizer test because the loop vectorizer does it now.	2013-01-09 01:20:59 +00:00
small-loop.ll	Remove the -licm pass from the loop vectorizer test because the loop vectorizer does it now.	2013-01-09 01:20:59 +00:00
start-non-zero.ll	Force a fixed unroll count on the target independent tests.	2013-01-05 00:58:48 +00:00
struct_access.ll	Add support for reverse pointer induction variables. These are loops that contain pointers that count backwards.	2013-01-23 01:35:00 +00:00
vectorize-once.ll	PR14448 - prevent the loop vectorizer from vectorizing the same loop twice.	2013-03-02 01:33:49 +00:00
write-only.ll	Remove the -licm pass from the loop vectorizer test because the loop vectorizer does it now.	2013-01-09 01:20:59 +00:00