Mercurial > projects > ldc
view tests/mini/naked_asm5.d @ 978:6a32d2e18175
Fix a latent bug in the asm code.
I think that technically, using "*m0" instead of "*0" allows LLVM to pick
between using the same memory as output 0 and using a new memory location.
(So far I haven't been able to construct a testcase that actually breaks
because of this, though)
author | Frits van Bommel <fvbommel wxs.nl> |
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date | Wed, 18 Feb 2009 03:38:12 +0100 |
parents | 1b10a9c6e3e8 |
children | a400b1dd657f |
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int foo(int op)(int a, int b) { version(X86) { const OP = (op == '+') ? "add" : "sub"; asm { naked; } mixin("asm{"~OP~" EAX, [ESP+4];}"); asm { ret 4; } } else version(X86_64) { const OP = (op == '+') ? "add" : "sub"; asm { naked; } mixin("asm{"~OP~" ESI,EDI; mov EAX, ESI;}"); asm { ret; } } else static assert(0, "todo"); } void main() { int i = foo!('+')(2, 4); assert(i == 6); i = foo!('-')(2, 4); assert(i == 2); }