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6 Commits

Author SHA1 Message Date
Mircea Trofin cdfd4c5c1a [NFC] Removed unused prefixes in test/CodeGen/AMDGPU 
More patches to follow. This covers the pertinent tests starting with e,
f, and g.

Differential Revision: https://reviews.llvm.org/D94124
 2021-01-05 19:18:30 -08:00
Cameron McInally 92be640bd7 [FPEnv][AMDGPU] Disable FSUB(-0,X)->FNEG(X) DAGCombine when subnormals are flushed 
This patch disables the FSUB(-0,X)->FNEG(X) DAG combine when we're flushing subnormals. It requires updating the existing AMDGPU tests to use the fneg IR instruction, in place of the old fsub(-0,X) canonical form, since AMDGPU is the only backend currently checking the DenormalMode flags.

Note that this will require follow-up optimizations to make sure the FSUB(-0,X) form is handled appropriately

Differential Revision: https://reviews.llvm.org/D93243
 2021-01-04 14:44:10 -06:00
Matt Arsenault 5660bb6bc9 AMDGPU: Remove denormal subtarget features 
Switch to using the denormal-fp-math/denormal-fp-math-f32 attributes.
 2020-04-02 17:17:12 -04:00
Konstantin Zhuravlyov 700b1ef54d AMDGPU: Fix V_FMA_F16 selection on GFX9 
GFX9 should select opsel version.

Differential Revision: https://reviews.llvm.org/D54545

llvm-svn: 347265
 2018-11-19 21:10:16 +00:00
Matt Arsenault 550c66d10f AMDGPU: Look for src mods before fp_extend 
When selecting modifiers for mad_mix instructions,
look at fneg/fabs that occur before the conversion.

llvm-svn: 315748
 2017-10-13 20:45:49 +00:00
Matt Arsenault 4d70754e3c AMDGPU: Implement isFPExtFoldable 
This helps match v_mad_mix* in some cases.

llvm-svn: 315744
 2017-10-13 20:18:59 +00:00