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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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src/amd/compiler/aco_instruction_selection.cpp
+2 -6
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@@ -1660,12 +1660,8 @@ void visit_alu_instr(isel_context *ctx, nir_alu_instr *instr)
Temp src = get_alu_src(ctx, instr->src[0]);
aco_ptr<Instruction> norm;
if (dst.size() == 1) {
Temp tmp;
Operand half_pi(0x3e22f983u);
if (src.type() == RegType::sgpr)
tmp = bld.vop2_e64(aco_opcode::v_mul_f32, bld.def(v1), half_pi, src);
else
tmp = bld.vop2(aco_opcode::v_mul_f32, bld.def(v1), half_pi, src);
Temp half_pi = bld.copy(bld.def(s1), Operand(0x3e22f983u));
Temp tmp = bld.vop2(aco_opcode::v_mul_f32, bld.def(v1), half_pi, as_vgpr(ctx, src));
/* before GFX9, v_sin_f32 and v_cos_f32 had a valid input domain of [-256, +256] */
if (ctx->options->chip_class < GFX9)