nir/spirv: Swap the argument order for AtomicCompareExchange

SPIR-V has the two arguments in the opposite order from GLSL.  NIR uses the
GLSL order so we had them backwards.

Fixes dEQP-VK.spirv_assembly.instruction.compute.opatomic.compex

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Cc: "12.0" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Dave Airlie <airlied@redhat.com>

diff --git a/src/compiler/spirv/spirv_to_nir.c b/src/compiler/spirv/spirv_to_nir.c
index fda38f9..4c0c794 100644 (file)
--- a/src/compiler/spirv/spirv_to_nir.c
+++ b/src/compiler/spirv/spirv_to_nir.c
@@ -1847,8 +1847,8 @@ fill_common_atomic_sources(struct vtn_builder *b, SpvOp opcode,
       break;
 
    case SpvOpAtomicCompareExchange:
-      src[0] = nir_src_for_ssa(vtn_ssa_value(b, w[7])->def);
-      src[1] = nir_src_for_ssa(vtn_ssa_value(b, w[8])->def);
+      src[0] = nir_src_for_ssa(vtn_ssa_value(b, w[8])->def);
+      src[1] = nir_src_for_ssa(vtn_ssa_value(b, w[7])->def);
       break;
       /* Fall through */