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3 Commits

Author SHA1 Message Date
Matt Arsenault d2e52eec51 AMDGPU: Select global saddr mode from SGPR pointer 
Use the 64-bit SGPR base with a 0 offset, since it's 1 fewer
instruction to materialize the 0 vs. the 64-bit copy.
 2020-11-16 11:51:06 -05:00
Petar Avramovic 416346d1ca AMDGPU/GlobalISel/Emitter Recognize additional 'same operand checks' 
The "name" of a non-leaf complex pattern (MY_PAT $op1, $op2) is
"MY_PAT:op1:op2" and the ones with same "name" represent same operand.
Add 'same operand check' for this case.

Differential Revision: https://reviews.llvm.org/D87351
 2020-09-14 12:10:59 +02:00
Petar Avramovic 0c8f4cd657 AMDGPU/GlobalISel Add test for non-leaf complex patterns 
GlobalIsel emitter does not import patterns where complex sub-operand
of a non-leaf complex pattern is referenced more then once. Multiple
references of complex patterns with same name and same sub-operands
represent the same operand. Document this with a test.
 2020-09-14 12:10:59 +02:00