Mercurial > hg > graal-compiler

changeset 13354:5a7508f1a7ff

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Fix LIR assertion (distance between an operation with an exception edge and the last introduction of a LIR block)
author Matthias Grimmer <grimmer@ssw.jku.at>
date Tue, 17 Dec 2013 10:57:18 +0100
parents 0e5c4f9fa9a5
children e3f15a21b7a1
files graal/com.oracle.graal.lir/src/com/oracle/graal/lir/LIR.java
diffstat 1 files changed, 4 insertions(+), 4 deletions(-) [+]
line wrap: on
line diff
--- a/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/LIR.java	Mon Dec 16 23:33:40 2013 +0100
+++ b/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/LIR.java	Tue Dec 17 10:57:18 2013 +0100
@@ -166,15 +166,15 @@
 
     /**
      * The maximum distance an operation with an {@linkplain #getExceptionEdge(LIRInstruction)
-     * exception edge} can be from the last instruction of a LIR block. The value of 2 is based on a
-     * non-void call operation that has an exception edge. Such a call op will have a move op after
-     * it to put the return value into the result variable.
+     * exception edge} can be from the last instruction of a LIR block. The value of 3 is based on a
+     * non-void call operation that has an exception edge. Such a call may move the result to
+     * another register and then spill it.
      * <p>
      * The rationale for such a constant is to limit the search for an insertion point when adding
      * move operations at the end of a block. Such moves must be inserted before all control flow
      * instructions.
      */
-    public static final int MAX_EXCEPTION_EDGE_OP_DISTANCE_FROM_END = 2;
+    public static final int MAX_EXCEPTION_EDGE_OP_DISTANCE_FROM_END = 3;
 
     public static boolean verifyBlock(LIR lir, Block block) {
         List<LIRInstruction> ops = lir.lir(block);