Note that llvm::UnwindInst may not be supported after LLVM 3.0.
Change-Id: I9598ddd584fdf67690405331a860d3a43f12517a
diff --git a/src/glsl/ir_to_llvm.cpp b/src/glsl/ir_to_llvm.cpp
index 9b880d9..b5b439b 100644
--- a/src/glsl/ir_to_llvm.cpp
+++ b/src/glsl/ir_to_llvm.cpp
@@ -989,7 +989,13 @@
// method has been removed from the IRBuilder. Here's the
// temporary workaround. But it would be better to remove
// this in the future.
- new llvm::UnwindInst(ctx, discard); /// XXX! Deprecated
+ //
+ // A solution after LLVM 3.0: To add a global boolean in the shader to
+ // store whether it was discarded or not and just continue on normally,
+ // and handle the discard outside the shader, in the scanline function.
+ // The discard instruction is not used frequently, so it should be okay
+ // performance wise.
+ new llvm::UnwindInst(ctx, discard); /// Deprecated
bb = after;
bld.SetInsertPoint(bb);
