Commit Graph

10 Commits

Author SHA1 Message Date
Matt Arsenault 6cc00429ff Fix fmul combines with constant splat vectors
Fixes things like fmul x, 2 -> fadd x, x

llvm-svn: 215820
2014-08-16 10:14:19 +00:00
Daniel Sanders fa961d76f0 [mips] Prevent %lo relocation being used on MSA loads and stores.
Summary:
Parts of the compiler still believed MSA load/stores have a 16-bit offset when
it is actually 10-bit. Corrected this, and fixed a closely related issue this
uncovered where load/stores with 10-bit and 12-bit offsets (MSA and microMIPS
respectively) could not load/store using offsets from the stack/frame pointer.
They accepted frameindex+offset, but not frameindex by itself.

Reviewers: jacksprat, matheusalmeida

Reviewed By: jacksprat

Differential Revision: http://llvm-reviews.chandlerc.com/D2888

llvm-svn: 202717
2014-03-03 14:31:21 +00:00
Daniel Sanders 1ede3002fa [mips][msa] Build all the tests in little and big endian modes and correct an incorrect test.
Summary:
This patch (correctly) breaks some MSA tests by exposing the cases when
SelectionDAG::getConstant() produces illegal types. These have been temporarily
marked XFAIL and the XFAIL flag will be removed when
SelectionDAG::getConstant() is fixed.

There are three categories of failure:
* Immediate instructions are not selected in one endian mode.
* Immediates used in ldi.[bhwd] must be different according to endianness.
  (this only affects cases where the 'wrong' ldi is used to load the correct
   bitpattern. E.g. (bitcast:v2i64 (build_vector:v4i32 ...)))
* Non-immediate instructions that rely on immediates affected by the
  previous two categories as part of their match pattern.
  For example, the bset match pattern is the vector equivalent of
  'ws | (1 << wt)'.

One test needed correcting to expect different output depending on whether big
or little endian was in use. This test was
test/CodeGen/Mips/msa/basic_operations.ll and experiences the second category
of failure shown above. The little endian version of this test is named
basic_operations_little.ll and will be merged back into basic_operations.ll in
a follow up commit now that FileCheck supports multiple check prefixes.

Reviewers: bkramer, jacksprat, dsanders

Reviewed By: dsanders

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D1972

llvm-svn: 194806
2013-11-15 11:04:16 +00:00
Daniel Sanders a952160078 [mips][msa] Added support for matching fexp2 from normal IR (i.e. not intrinsics)
llvm-svn: 193239
2013-10-23 10:36:52 +00:00
Daniel Sanders e67bd87c48 [mips][msa] Added support for matching fmsub.[wd] from normal IR (i.e. not intrinsics)
llvm-svn: 192435
2013-10-11 10:27:32 +00:00
Daniel Sanders d7103f3187 [mips][msa] Added support for matching fmadd.[wd] from normal IR (i.e. not intrinsics)
llvm-svn: 192430
2013-10-11 10:14:25 +00:00
Daniel Sanders 015972bd95 [mips][msa] Added support for matching ffint_[us].[wd], and ftrunc_[us].[wd] from normal IR (i.e. not intrinsics)
llvm-svn: 192429
2013-10-11 10:00:06 +00:00
Daniel Sanders 1b1e25b7c5 [mips][msa] MSA requires FR=1 mode (64-bit FPU register file). Report fatal error when using it in FR=0 mode.
llvm-svn: 191498
2013-09-27 10:08:31 +00:00
Daniel Sanders 4f3ff1b9e8 [mips][msa] Added partial support for matching fmax_a from normal IR (i.e. not intrinsics)
This covers the case where fmax_a can be used to implement ISD::FABS.

llvm-svn: 191296
2013-09-24 13:02:08 +00:00
Daniel Sanders 7fab912257 [mips][msa] Added test cases that were supposed to be part of r190507, r190509, r190512, and r190518.
llvm-svn: 190522
2013-09-11 12:39:25 +00:00