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

[mesa.git] / src / amd / compiler / aco_builder_h.py

diff --git a/src/amd/compiler/aco_builder_h.py b/src/amd/compiler/aco_builder_h.py
index d215c7b198ff4db7723efe9db410b80dac1e3481..b8854810e470a9f29f27adb5c6037b2bb1416d45 100644 (file)
--- a/src/amd/compiler/aco_builder_h.py
+++ b/src/amd/compiler/aco_builder_h.py
@@ -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);