Mercurial > hg > truffle
diff graal/com.oracle.max.cri/src/com/oracle/max/cri/ci/CiKind.java @ 5456:a5e43a18ac52
added computation of array base offset and index scaling into CiKind and used it to remove a hard coded assumption in canonicalization of LoadIndexedNode
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Wed, 30 May 2012 18:34:11 +0200 |
| parents | ab31310d4af9 |
| children | d89b20486d87 |
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--- a/graal/com.oracle.max.cri/src/com/oracle/max/cri/ci/CiKind.java Wed May 30 18:07:38 2012 +0200 +++ b/graal/com.oracle.max.cri/src/com/oracle/max/cri/ci/CiKind.java Wed May 30 18:34:11 2012 +0200 @@ -344,6 +344,58 @@ return Character.toUpperCase(typeChar); } + public final int arrayBaseOffset() { + switch(this) { + case Boolean: + return Unsafe.ARRAY_BOOLEAN_BASE_OFFSET; + case Byte: + return Unsafe.ARRAY_BYTE_BASE_OFFSET; + case Char: + return Unsafe.ARRAY_CHAR_BASE_OFFSET; + case Short: + return Unsafe.ARRAY_SHORT_BASE_OFFSET; + case Int: + return Unsafe.ARRAY_INT_BASE_OFFSET; + case Long: + return Unsafe.ARRAY_LONG_BASE_OFFSET; + case Float: + return Unsafe.ARRAY_FLOAT_BASE_OFFSET; + case Double: + return Unsafe.ARRAY_DOUBLE_BASE_OFFSET; + case Object: + return Unsafe.ARRAY_OBJECT_BASE_OFFSET; + default: + assert false : "unexpected kind: " + this; + return -1; + } + } + + public final int arrayIndexScale() { + switch(this) { + case Boolean: + return Unsafe.ARRAY_BOOLEAN_INDEX_SCALE; + case Byte: + return Unsafe.ARRAY_BYTE_INDEX_SCALE; + case Char: + return Unsafe.ARRAY_CHAR_INDEX_SCALE; + case Short: + return Unsafe.ARRAY_SHORT_INDEX_SCALE; + case Int: + return Unsafe.ARRAY_INT_INDEX_SCALE; + case Long: + return Unsafe.ARRAY_LONG_INDEX_SCALE; + case Float: + return Unsafe.ARRAY_FLOAT_INDEX_SCALE; + case Double: + return Unsafe.ARRAY_DOUBLE_INDEX_SCALE; + case Object: + return Unsafe.ARRAY_OBJECT_INDEX_SCALE; + default: + assert false : "unexpected kind: " + this; + return -1; + } + } + public CiConstant readUnsafeConstant(Object value, long displacement) { assert value != null; Unsafe u = Unsafe.getUnsafe();