db7ee7660a
[AMDGPU] Preliminary patch for divergence driven instruction selection. Immediate selection predicate changed
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Differential revision: https://reviews.llvm.org/D51734
Reviewers: rampitec
llvm-svn: 341928
2018-09-11 11:56:50 +00:00
6c7ba82900
AMDGPU: Address todo for handling 1/(2 pi)
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llvm-svn: 339814
2018-08-15 21:03:55 +00:00
de496c32a4
AMDGPU: Reduce code size with fcanonicalize (fneg x)
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When fcanonicalize is lowered to a mul, we can
use -1.0 for free and avoid the cost of the bigger
encoding for source modifers.
llvm-svn: 338244
2018-07-30 12:16:58 +00:00
f3c9a34def
AMDGPU: Make fneg combine handle fcanonicalize
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llvm-svn: 338243
2018-07-30 12:16:47 +00:00
70b9282015
AMDGPU: Fix -enable-var-scope violations
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llvm-svn: 318004
2017-11-12 23:53:44 +00:00
6c29c5acfe
AMDGPU: Allow SIShrinkInstructions to work in non-SSA
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Immediates can be folded as long as the immediate is a vreg.
Also undo commuting instructions if it didn't fold an immediate.
llvm-svn: 307575
2017-07-10 19:53:57 +00:00
bf5482e4bb
AMDGPU: Pull fneg out of extract_vector_elt
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This allows folding source modifiers in more f16 cases.
Makes it easier to select per-component packed neg modifiers.
llvm-svn: 302813
2017-05-11 17:26:25 +00:00
3dbeefa978
AMDGPU: Mark all unspecified CC functions in tests as amdgpu_kernel
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Currently the default C calling convention functions are treated
the same as compute kernels. Make this explicit so the default
calling convention can be changed to a non-kernel.
Converted with perl -pi -e 's/define void/define amdgpu_kernel void/'
on the relevant test directories (and undoing in one place that actually
wanted a non-kernel).
llvm-svn: 298444
2017-03-21 21:39:51 +00:00
dbcf9e2ee4
LiveRegMatrix: Fix some subreg interference checks
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Surprisingly, one of the three interference checks in LiveRegMatrix was
using the main live range instead of the apropriate subregister range
resulting in unnecessarily conservative results.
llvm-svn: 296722
2017-03-02 00:35:08 +00:00
e1b595306d
AMDGPU: Fold fneg into fmin/fmax_legacy
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llvm-svn: 293972
2017-02-03 00:51:50 +00:00
2511c031de
AMDGPU: Fold fneg into fminnum/fmaxnum
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llvm-svn: 293968
2017-02-03 00:23:15 +00:00
a8fcfadf46
AMDGPU: Check if users of fneg can fold mods
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In multi-use cases this can save a few instructions.
llvm-svn: 293962
2017-02-02 23:21:23 +00:00
53f0cc238c
AMDGPU: Fold fneg into round instructions
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llvm-svn: 293127
2017-01-26 01:25:36 +00:00
74a576e7d3
AMDGPU: Check nsz instead of unsafe math
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llvm-svn: 293028
2017-01-25 06:27:02 +00:00
8a27aee6ae
DAGCombiner: Allow negating ConstantFP after legalize
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llvm-svn: 293019
2017-01-25 04:54:34 +00:00
3e6f9b5773
AMDGPU: Disable some fneg combines unless nsz
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For -(x + y) -> (-x) + (-y), if x == -y, this would
change the result from -0.0 to 0.0. Since the fma/fmad
combine is an extension of this problem it also
applies there.
fmul should be fine, and I don't think any of the unary
operators or conversions should be a problem either.
llvm-svn: 292473
2017-01-19 06:35:27 +00:00
31c039ef2e
AMDGPU: Fold free fneg into sin
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llvm-svn: 291790
2017-01-12 18:48:09 +00:00
a8c325e2f5
AMDGPU: Fold fneg into fmul_legacy
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llvm-svn: 291784
2017-01-12 18:26:30 +00:00
ff7e5aadf5
AMDGPU: Fold fneg into rcp
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llvm-svn: 291779
2017-01-12 17:46:35 +00:00
4242d48c36
AMDGPU: Fold fneg into fp_round
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llvm-svn: 291778
2017-01-12 17:46:33 +00:00
98d2bf1024
AMDGPU: Fold fneg into fp_extend
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llvm-svn: 291777
2017-01-12 17:46:28 +00:00
63f953795e
AMDGPU: Fold fneg into fma or fmad
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Patch mostly by Fiona Glaser
llvm-svn: 291733
2017-01-12 00:32:16 +00:00
4103a81d6d
AMDGPU: Fold fneg into fmul
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Patch mostly by Fiona Glaser
llvm-svn: 291732
2017-01-12 00:23:20 +00:00
2529fba989
AMDGPU: Fold fneg into fadd
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Patch mostly by Fiona Glaser
llvm-svn: 291731
2017-01-12 00:09:34 +00:00
Alexander Timofeev