[Mesa-dev] [PATCH] glsl_to_tgsi: don't create 64-bit integer MAD/FMA

[Rhys Perry]

TGSI has no I64MAD/U64MAD opcode.

Fixes: 278580729a5 ('st/glsl_to_tgsi: add support for 64-bit integers')
Signed-off-by: Rhys Perry <pendingchaos02 at gmail.com>
---
 src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index dea91c7a18..e1e00b3e33 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -1274,6 +1274,10 @@ glsl_to_tgsi_visitor::try_emit_mad(ir_expression *ir, int mul_operand)
    st_src_reg a, b, c;
    st_dst_reg result_dst;
 
+   // there is no TGSI opcode for this
+   if (ir->type->is_integer_64())
+      return false;
+
    ir_expression *expr = ir->operands[mul_operand]->as_expression();
    if (!expr || expr->operation != ir_binop_mul)
       return false;
-- 
2.17.2