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-rw-r--r--src/compiler/glsl/glsl_parser_extras.cpp18
1 files changed, 18 insertions, 0 deletions
diff --git a/src/compiler/glsl/glsl_parser_extras.cpp b/src/compiler/glsl/glsl_parser_extras.cpp
index 275c4d75711..0cc57f5a887 100644
--- a/src/compiler/glsl/glsl_parser_extras.cpp
+++ b/src/compiler/glsl/glsl_parser_extras.cpp
@@ -2242,6 +2242,24 @@ do_common_optimization(exec_list *ir, bool linked,
loop_progress = false;
loop_progress |= do_constant_propagation(ir);
loop_progress |= do_if_simplification(ir);
+
+ /* Some drivers only call do_common_optimization() once rather
+ * than in a loop. So we must call do_lower_jumps() after
+ * unrolling a loop because for drivers that use LLVM validation
+ * will fail if a jump is not the last instruction in the block.
+ * For example the following will fail LLVM validation:
+ *
+ * (loop (
+ * ...
+ * break
+ * (assign (x) (var_ref v124) (expression int + (var_ref v124)
+ * (constant int (1)) ) )
+ * ))
+ */
+ loop_progress |= do_lower_jumps(ir, true, true,
+ options->EmitNoMainReturn,
+ options->EmitNoCont,
+ options->EmitNoLoops);
}
progress |= loop_progress;
}