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vc4: Don't make a temporary for setting flags.

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The register allocator doesn't really do anything about the temp, so it
doesn't seem like it should matter.  However, the scheduler would think
that a new def is being created.

This doesn't change anything yet, but it avoids a bunch of regressions in
the next commit.
This commit is contained in:
Eric Anholt 2016-03-15 18:58:43 -07:00
parent b4f45f319c
commit 7c9fc43915
1 changed files with 2 additions and 1 deletions
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3
src/gallium/drivers/vc4/vc4_qir.c
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@ -495,7 +495,8 @@ qir_SF(struct vc4_compile *c, struct qreg src)
!c->defs[src.index] ||
last_inst != c->defs[src.index] ||
qir_is_multi_instruction(last_inst)) {
src = qir_MOV(c, src);
struct qreg null = { QFILE_NULL, 0 };
last_inst = qir_MOV_dest(c, null, src);
last_inst = (struct qinst *)c->instructions.prev;
}
last_inst->sf = true;