annotate lphobos/gcstats.d @ 1047:6bb04dbee21f
Some calling convention work for x86-64:
- Implement x86-64 extern(C), hopefully correctly.
- Tried to be a bit smarter about extern(D) while I was there.
Interestingly, this code seems to be generating more efficient code than
gcc and llvm-gcc in some edge cases, like returning a `{ [7 x i8] }` loaded from
a stack slot from an extern(C) function. (gcc generates 7 1-byte loads, while
this code generates a 4-byte, a 2-byte and a 1-byte load)
I also added some changes to make sure structs being returned from functions or
passed in as parameters are stored in memory where the rest of the backend seems
to expect them to be. These should be removed when support for first-class
aggregates improves.
| author |
Frits van Bommel <fvbommel wxs.nl> |
| date |
Fri, 06 Mar 2009 16:00:47 +0100 |
| parents |
c53b6e3fe49a |
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line source |
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1 // Copyright (c) 1999-2002 by Digital Mars
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2 // All Rights Reserved
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3 // written by Walter Bright
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4 // www.digitalmars.com
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5
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6 struct GCStats
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7 {
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8 size_t poolsize; // total size of pool
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9 size_t usedsize; // bytes allocated
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10 size_t freeblocks; // number of blocks marked FREE
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11 size_t freelistsize; // total of memory on free lists
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12 size_t pageblocks; // number of blocks marked PAGE
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13 }
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