[Mesa-stable] [PATCH v3 1/3] spirv: Fix reaching unreachable for compare exchange on images

[James Legg]

We were hitting the
	unreachable("Invalid image opcode")
near the end of vtn_handle_image when parsing the
SpvOpAtomicCompareExchange opcode.

v2: Add stable CC.
v3: Ignore SpvOpAtomicCompareExchangeWeak. It requires the Kernel
capability which is not exposed in Vulkan, and spirv_to_nir is not used
for OpenCL which does support it.

CC: <mesa-stable at lists.freedesktop.org>
---
 src/compiler/spirv/spirv_to_nir.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/compiler/spirv/spirv_to_nir.c b/src/compiler/spirv/spirv_to_nir.c
index 0a5eb0e..0e6229b 100644
--- a/src/compiler/spirv/spirv_to_nir.c
+++ b/src/compiler/spirv/spirv_to_nir.c
@@ -1977,6 +1977,7 @@ vtn_handle_image(struct vtn_builder *b, SpvOp opcode,
       intrin->src[2] = nir_src_for_ssa(vtn_ssa_value(b, w[3])->def);
       break;
 
+   case SpvOpAtomicCompareExchange:
    case SpvOpAtomicIIncrement:
    case SpvOpAtomicIDecrement:
    case SpvOpAtomicExchange:
-- 
2.9.4