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nv50/ir: extend moveSources for delta < 0

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This commit is contained in:
Christoph Bumiller 2013-02-17 12:01:55 +01:00
parent c0fc3463e9
commit ce1951daed
2 changed files with 32 additions and 17 deletions
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47
src/gallium/drivers/nv50/codegen/nv50_ir.cpp
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@ -661,29 +661,44 @@ Instruction::swapSources(int a, int b)
srcs[b].mod = m;
}
// TODO: extend for delta < 0
static inline void moveSourcesAdjustIndex(int8_t &index, int s, int delta)
{
if (index >= s)
index += delta;
else
if ((delta < 0) && (index >= (s + delta)))
index = -1;
}
// Moves sources [@s,last_source] by @delta.
// If @delta < 0, sources [@s - abs(@delta), @s) are erased.
void
Instruction::moveSources(int s, int delta)
Instruction::moveSources(const int s, const int delta)
{
if (delta == 0)
return;
assert(delta > 0);
assert(s + delta >= 0);
int k;
for (k = 0; srcExists(k); ++k) {
for (int i = 0; i < 2; ++i) {
if (src(k).indirect[i] >= s)
src(k).indirect[i] += delta;
}
}
if (predSrc >= s)
predSrc += delta;
if (flagsSrc >= s)
flagsSrc += delta;
--k;
for (int p = k + delta; k >= s; --k, --p)
setSrc(p, src(k));
for (k = 0; srcExists(k); ++k) {
for (int i = 0; i < 2; ++i)
moveSourcesAdjustIndex(src(k).indirect[i], s, delta);
}
moveSourcesAdjustIndex(predSrc, s, delta);
moveSourcesAdjustIndex(flagsSrc, s, delta);
if (delta > 0) {
--k;
for (int p = k + delta; k >= s; --k, --p)
setSrc(p, src(k));
} else {
int p;
for (p = s; p < k; ++p)
setSrc(p + delta, src(p));
for (; (p + delta) < k; ++p)
setSrc(p + delta, NULL);
}
}
void

2
src/gallium/drivers/nv50/codegen/nv50_ir.h
View file

@ -677,7 +677,7 @@ public:
void setSrc(int s, Value *);
void setSrc(int s, const ValueRef&);
void swapSources(int a, int b);
void moveSources(int s, int delta); // NOTE: only delta > 0 implemented
void moveSources(int s, int delta);
bool setIndirect(int s, int dim, Value *);
inline ValueRef& src(int s) { return srcs[s]; }