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optimize moveRR and fix andC

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This commit is contained in:
Joel Dice 2009-03-05 20:21:15 -07:00
parent 75e28e81c9
commit a0e503ad0a
2 changed files with 25 additions and 4 deletions
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12
src/powerpc.cpp
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@ -615,10 +615,8 @@ moveRR(Context* c, unsigned srcSize, Assembler::Register* src,
case 4:
case 8:
if (srcSize == 4 and dstSize == 8) {
Assembler::Register dstHigh(dst->high);
moveRR(c, 4, src, 4, dst);
moveRR(c, 4, src, 4, &dstHigh);
issue(c, srawi(dst->high, dst->high, 31));
issue(c, srawi(dst->high, src->low, 31));
} else if (srcSize == 8 and dstSize == 8) {
Assembler::Register srcHigh(src->high);
Assembler::Register dstHigh(dst->high);
@ -1073,7 +1071,13 @@ andC(Context* c, unsigned size, Assembler::Constant* a,
}
if (state) {
issue(c, rlwinm(dst->low, b->low, 0, 31 - end, 31 - start));
if (start != 0 or end != 31) {
issue(c, rlwinm(dst->low, b->low, 0, 31 - end, 31 - start));
} else {
moveRR(c, 4, b, 4, dst);
}
} else {
issue(c, li(dst->low, 0));
}
}
}

17
test/Longs.java
View File

@ -16,6 +16,20 @@ public class Longs {
putInt((int)val, dst, offset + 4);
}
public static int getInt(byte[] src, int offset) {
int r = ((src[offset] & 0xFF) << 24)
| ((src[offset + 1] & 0xFF) << 16)
| ((src[offset + 2] & 0xFF) << 8)
| ((src[offset + 3] & 0xFF));
System.out.println("get " + r);
return r;
}
public static long getLong(byte[] src, int offset) {
return ((long) getInt(src, offset) << 32)
| ((long) getInt(src, offset + 4) & 0xffffffffL);
}
private static long roundUp(long a, long b) {
a += b - 1L;
return a - (a % b);
@ -174,6 +188,7 @@ public class Longs {
{ byte[] array = new byte[8];
putLong(231, array, 0);
expect((array[0] & 0xff) == 0);
expect((array[1] & 0xff) == 0);
expect((array[2] & 0xff) == 0);
@ -182,6 +197,8 @@ public class Longs {
expect((array[5] & 0xff) == 0);
expect((array[6] & 0xff) == 0);
expect((array[7] & 0xff) == 231);
expect(getLong(array, 0) == 231);
}
java.nio.ByteBuffer buffer = java.nio.ByteBuffer.allocate(8);