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comparison graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/type/StampTool.java @ 12656:9334392ed279

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Refactor ConvertNode.
author Roland Schatz <roland.schatz@oracle.com>
date Mon, 04 Nov 2013 11:25:10 +0100
parents 035474349265
children e53aa17b8fdf
comparison
equal deleted inserted replaced
12655:2c4aa758ee18 12656:9334392ed279
302 302
303 public static Stamp intToLong(IntegerStamp intStamp) { 303 public static Stamp intToLong(IntegerStamp intStamp) {
304 return StampFactory.forInteger(Kind.Long, intStamp.lowerBound(), intStamp.upperBound(), signExtend(intStamp.downMask(), Kind.Int), signExtend(intStamp.upMask(), Kind.Int)); 304 return StampFactory.forInteger(Kind.Long, intStamp.lowerBound(), intStamp.upperBound(), signExtend(intStamp.downMask(), Kind.Int), signExtend(intStamp.upMask(), Kind.Int));
305 } 305 }
306 306
307 private static IntegerStamp narrowingKindConvertion(IntegerStamp fromStamp, Kind toKind) { 307 public static IntegerStamp narrowingKindConversion(IntegerStamp fromStamp, Kind toKind) {
308 assert toKind == Kind.Byte || toKind == Kind.Char || toKind == Kind.Short || toKind == Kind.Int; 308 assert toKind == Kind.Byte || toKind == Kind.Char || toKind == Kind.Short || toKind == Kind.Int;
309 final long upperBound; 309 final long upperBound;
310 if (fromStamp.lowerBound() < toKind.getMinValue()) { 310 if (fromStamp.lowerBound() < toKind.getMinValue()) {
311 upperBound = toKind.getMaxValue(); 311 upperBound = toKind.getMaxValue();
312 } else { 312 } else {
332 } else { 332 } else {
333 return value; 333 return value;
334 } 334 }
335 } 335 }
336 336
337 public static IntegerStamp intToByte(IntegerStamp intStamp) {
338 assert intStamp.kind() == Kind.Int;
339 return narrowingKindConvertion(intStamp, Kind.Byte);
340 }
341
342 public static IntegerStamp intToShort(IntegerStamp intStamp) {
343 assert intStamp.kind() == Kind.Int;
344 return narrowingKindConvertion(intStamp, Kind.Short);
345 }
346
347 public static IntegerStamp intToChar(IntegerStamp intStamp) {
348 assert intStamp.kind() == Kind.Int;
349 return narrowingKindConvertion(intStamp, Kind.Char);
350 }
351
352 public static IntegerStamp longToInt(IntegerStamp longStamp) {
353 assert longStamp.kind() == Kind.Long;
354 return narrowingKindConvertion(longStamp, Kind.Int);
355 }
356
357 public static long saturate(long v, Kind kind) { 337 public static long saturate(long v, Kind kind) {
358 long max = kind.getMaxValue(); 338 long max = kind.getMaxValue();
359 if (v > max) { 339 if (v > max) {
360 return max; 340 return max;
361 } 341 }