From 75ccfd8fb27bb9eb6597310739379fd76a3b6da4 Mon Sep 17 00:00:00 2001
From: Rhys Perry <pendingchaos02@gmail.com>
Date: Tue, 31 Mar 2026 13:31:16 +0100
Subject: [PATCH] nir/propagate_invariant: set fp_math_ctrl for intrinsics

No fossil-db changes.

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40740>
---
 src/compiler/nir/nir_propagate_invariant.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/compiler/nir/nir_propagate_invariant.c b/src/compiler/nir/nir_propagate_invariant.c
index 726a9f8ab0e..d04ecd01ee3 100644
--- a/src/compiler/nir/nir_propagate_invariant.c
+++ b/src/compiler/nir/nir_propagate_invariant.c
@@ -122,6 +122,11 @@ propagate_invariant_instr(nir_instr *instr, struct set *invariants)
 
       if (nir_intrinsic_infos[intrin->intrinsic].has_dest &&
           def_is_invariant(&intrin->def, invariants)) {
+         if (nir_intrinsic_has_fp_math_ctrl(intrin)) {
+            unsigned ctrl = nir_intrinsic_fp_math_ctrl(intrin) | nir_fp_exact;
+            nir_intrinsic_set_fp_math_ctrl(intrin, ctrl);
+         }
+
          nir_foreach_src(instr, add_src_cb, invariants);
       }
       break;