From: Ian Romanick <ian.d.roman...@intel.com>
No change in the peak ir_variable memory usage in a trimmed apitrace of
dota2 on 64-bit.
No change in the peak ir_variable memory usage in a trimmed apitrace of
dota2 on 32-bit.
Signed-off-by: Ian Romanick <ian.d.roman...@intel.com>
---
src/glsl/ir.h | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/src/glsl/ir.h b/src/glsl/ir.h
index bc02f6e..fb10c32 100644
--- a/src/glsl/ir.h
+++ b/src/glsl/ir.h
@@ -95,6 +95,20 @@ private:
uint8_t ir_type;
public:
+ /**
+ * Alignment padding that would be added by the compiler
+ *
+ * Putting a field here makes what would otherwise be dead space usabled.
+ * Subclasses of ir_instruction can store data here. Care must be taken
+ * for two reasons:
+ *
+ * 1. Direct descendents in the class hierarchy (e.g., \c ir_dereference
+ * and \c ir_dereference_array) must not try to use this space.
+ *
+ * 2. The size of the padding depends on the architecture.
+ */
+ uint8_t padding[sizeof(intptr_t) - 1];
+
inline enum ir_node_type get_ir_type() const
{
STATIC_ASSERT(ir_type_max < 256);
--
1.8.1.4
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