Mesa (master): v3d: Translate f2i(fround_even) as FTOIN.

[GitLab Mirror]

Module: Mesa
Branch: master
Commit: a9dd227a47c8fd767b313827ccbb9e3c67e6b8e7
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=a9dd227a47c8fd767b313827ccbb9e3c67e6b8e7

Author: Eric Anholt <eric at anholt.net>
Date:   Sat Feb 23 11:21:26 2019 -0800

v3d: Translate f2i(fround_even) as FTOIN.

This appears to be just what the opcode does.  Needed for equivalence when
moving FF VPM stores into NIR.

---

 src/broadcom/compiler/nir_to_vir.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/broadcom/compiler/nir_to_vir.c b/src/broadcom/compiler/nir_to_vir.c
index d4f6088bcf2..f5729ffa238 100644
--- a/src/broadcom/compiler/nir_to_vir.c
+++ b/src/broadcom/compiler/nir_to_vir.c
@@ -866,9 +866,16 @@ ntq_emit_alu(struct v3d_compile *c, nir_alu_instr *instr)
                 result = vir_FMAX(c, src[0], src[1]);
                 break;
 
-        case nir_op_f2i32:
-                result = vir_FTOIZ(c, src[0]);
+        case nir_op_f2i32: {
+                nir_alu_instr *src0_alu = ntq_get_alu_parent(instr->src[0].src);
+                if (src0_alu && src0_alu->op == nir_op_fround_even) {
+                        result = vir_FTOIN(c, ntq_get_alu_src(c, src0_alu, 0));
+                } else {
+                        result = vir_FTOIZ(c, src[0]);
+                }
                 break;
+        }
+
         case nir_op_f2u32:
                 result = vir_FTOUZ(c, src[0]);
                 break;