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aco: make 1/2*PI a literal constant on SI/CI

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Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
This commit is contained in:
Daniel Schürmann
2019-11-14 08:09:32 +01:00
parent 90fad7360d
commit da7ff58835
4 changed files with 19 additions and 15 deletions
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5
src/amd/compiler/aco_builder_h.py
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@@ -327,7 +327,10 @@ public:
Operand op = op_.op;
if (dst.regClass() == s1 && op.size() == 1 && op.isLiteral()) {
uint32_t imm = op.constantValue();
if (imm >= 0xffff8000 || imm <= 0x7fff) {
if (imm == 0x3e22f983) {
if (program->chip_class >= GFX8)
op.setFixed(PhysReg{248}); /* it can be an inline constant on GFX8+ */
} else if (imm >= 0xffff8000 || imm <= 0x7fff) {
return sopk(aco_opcode::s_movk_i32, dst, imm & 0xFFFFu);
} else if (util_bitreverse(imm) <= 64 || util_bitreverse(imm) >= 0xFFFFFFF0) {
uint32_t rev = util_bitreverse(imm);