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3 Commits

Author SHA1 Message Date
Matt Arsenault b64aa8c715 AMDGPU/GlobalISel: Fix constant bus violation with source modifiers 
This looked through copies to find the source modifiers, which may
have been SGPR->VGPR copies added to avoid potential constant bus
violations. Re-insert a copy to a VGPR if this happens.
 2020-02-21 10:30:23 -05:00
Matt Arsenault 94e8ef4d4c AMDGPU/GlobalISel: Look through copies for source modifiers 
When all VOP instructions are legalized to VGPRs, any SGPR source
modifiers will have a copy in the way.
 2020-01-29 08:08:13 -08:00
Matt Arsenault 752e2e245a AMDGPU/GlobalISel: Rewrite fadd select tests 
Convert to the style most others use with one test instruction per
function, and use an implicit use to ensure the result register class
is constrained.

Change-Id: I6109148b0e3c80aa5535796a37abca583c19a936
 2020-01-29 07:49:38 -08:00