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https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-15 09:21:33 +00:00
ce6b27cfae
It seems that the optimizer keeps array assignments live when passing
the array as a pointer, but not when passing the address of an element.
Found when testing the following code:
BasisBlade *pga_blades[16] = {
blades[1], blades[2], blades[3], blades[4],
blades[7], blades[6], blades[5], blades[0],
blades[8], blades[9], blades[10], blades[15],
blades[14], blades[13], blades[12], blades[11],
};
BasisGroup *pga_groups[4] = {
[BasisGroup new:4 basis:&pga_blades[ 0]],
[BasisGroup new:4 basis:&pga_blades[ 4]],
[BasisGroup new:4 basis:&pga_blades[ 8]],
[BasisGroup new:4 basis:&pga_blades[12]],
};
Only the first element of pga_blades is being assigned in the optimized
code, but everything is correct when not optimizing.
20 lines
223 B
R
20 lines
223 B
R
vector
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bar (float *v)
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{
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return [v[0], v[1], v[2]];
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}
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vector
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foo (float x, float y, float z)
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{
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float v[3] = { x, y, z };
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return bar (&v[0]);
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}
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int
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main ()
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{
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int ret = 0;
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ret |= foo(1,2,3) != [1, 2, 3];
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return ret;
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}
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