Fix loading uninitialized data in loops.

When we have an uninitialized variable that is declared outside of a loop and is read and written to inside the loop, we should not eliminate the load and replace it with an undefined value, because in the next iteration we want the value from the previous iteration. Change-Id: Ic996c796307f62fc835079af6c58adf1eb288259 Reviewed-on: https://swiftshader-review.googlesource.com/8488Tested-by: Nicolas Capens <capn@google.com> Reviewed-by: Alexis Hétu <sugoi@google.com> Reviewed-by: Nicolas Capens <capn@google.com>

Fix loading uninitialized data in loops.
22e18bcc · Nicolas Capens · 3e7062b9 · 22e18bcc
Commit 22e18bcc authored Jan 18, 2017 by Nicolas Capens
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Optimizer.cpp src/Reactor/Optimizer.cpp +4 -1

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--- a/src/Reactor/Optimizer.cpp
+++ b/src/Reactor/Optimizer.cpp
@@ -328,7 +328,10 @@ namespace
 							continue;
 						}
-						replace(load, storeValue);
+						if(storeValue)
+						{
+							replace(load, storeValue);
+						}
 					}
 				}
 			}