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aco/ra: fix get_reg_for_operand() with no free registers

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fossil-db (Sienna Cichlid):
Totals from 195 (0.13% of 149839) affected shaders:
CodeSize: 2352160 -> 2356720 (+0.19%); split: -0.00%, +0.20%
Instrs: 431976 -> 433124 (+0.27%); split: -0.00%, +0.27%
Latency: 10174434 -> 10174897 (+0.00%); split: -0.00%, +0.00%
InvThroughput: 4044388 -> 4044425 (+0.00%); split: -0.00%, +0.00%
Copies: 67634 -> 68762 (+1.67%); split: -0.00%, +1.67%

fossil-db (Polaris):
Totals from 186 (0.12% of 151365) affected shaders:
CodeSize: 2272356 -> 2276848 (+0.20%); split: -0.00%, +0.20%
Instrs: 432390 -> 433513 (+0.26%); split: -0.00%, +0.26%
Latency: 13153394 -> 13160194 (+0.05%); split: -0.00%, +0.05%
InvThroughput: 10889509 -> 10889967 (+0.00%); split: -0.00%, +0.00%
SClause: 12745 -> 12747 (+0.02%)
Copies: 74832 -> 75945 (+1.49%); split: -0.01%, +1.50%

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10459>
This commit is contained in:
Rhys Perry
2021-04-23 14:29:22 +01:00
committed by Marge Bot
parent 4e459df0fc
commit bc95d55e1f
2 changed files with 27 additions and 2 deletions
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src/amd/compiler/tests/test_regalloc.cpp
+19
View File
@@ -77,3 +77,22 @@ BEGIN_TEST(regalloc.32bit_partial_write)
finish_ra_test(ra_test_policy());
END_TEST
BEGIN_TEST(regalloc.precolor.swap)
//>> s2: %op0:s[0-1] = p_startpgm
if (!setup_cs("s2", GFX10))
return;
program->dev.sgpr_limit = 4;
//! s2: %op1:s[2-3] = p_unit_test
Temp op1 = bld.pseudo(aco_opcode::p_unit_test, bld.def(s2));
//! s2: %op1_2:s[0-1], s2: %op0_2:s[2-3] = p_parallelcopy %op1:s[2-3], %op0:s[0-1]
//! p_unit_test %op0_2:s[2-3], %op1_2:s[0-1]
Operand op(inputs[0]);
op.setFixed(PhysReg(2));
bld.pseudo(aco_opcode::p_unit_test, op, op1);
finish_ra_test(ra_test_policy());
END_TEST