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nv50/ir/opt: don't lose saturation in tryCollapseChainedMULs

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This commit is contained in:
Christoph Bumiller
2012-05-05 16:35:49 +02:00
parent 38a20281fc
commit 28d6a268af
1 changed files with 3 additions and 2 deletions
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src/gallium/drivers/nv50/codegen/nv50_ir_peephole.cpp
+3 -2
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@@ -564,7 +564,7 @@ ConstantFolding::tryCollapseChainedMULs(Instruction *mul2,
insn = mul2->getSrc(t)->getInsn();
if (!mul2->src(t).mod && insn->op == OP_MUL && insn->dType == TYPE_F32)
mul1 = insn;
if (mul1) {
if (mul1 && !mul1->saturate) {
int s1;
if (mul1->src(s1 = 0).getImmediate(imm1) ||
@@ -584,10 +584,11 @@ ConstantFolding::tryCollapseChainedMULs(Instruction *mul2,
if (f < 0)
mul1->src(0).mod *= Modifier(NV50_IR_MOD_NEG);
}
mul1->saturate = mul2->saturate;
return;
}
}
if (mul2->getDef(0)->refCount() == 1) {
if (mul2->getDef(0)->refCount() == 1 && !mul2->saturate) {
// b = mul a, imm
// d = mul b, c -> d = mul_x_imm a, c
int s2, t2;