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i965/fs: Set stride correctly for immediates in fs_reg(brw_reg).

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The fs_reg() constructors for immediates set stride to 0, except for
vector-immediates, which set stride to 1.  This patch makes the fs_reg
constructor that takes a brw_reg do likewise, so that stride is set
correctly for cases such as fs_reg(brw_imm_v(...)).

The generator asserts that this is true (and presumably it's useful in
some optimization passes?) and the VF fs_reg constructors did this (by
virtue of the fact that it doesn't override what init() does).

In the next commit, calling this constructor with brw_imm_* will generate
an IMM file register rather than a HW_REG, making this change necessary
to avoid breakage with existing uses of brw_imm_v().

Reviewed-by: Emil Velikov <emil.velikov@collabora.co.uk>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Matt Turner 2015-11-02 00:25:04 +00:00
parent b99e1fd547
commit 4b0fbebf02
1 changed files with 6 additions and 0 deletions
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6
src/mesa/drivers/dri/i965/brw_fs.cpp
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@ -428,6 +428,12 @@ fs_reg::fs_reg(struct brw_reg reg) :
this->subreg_offset = 0;
this->reladdr = NULL;
this->stride = 1;
if (this->file == IMM &&
(this->type != BRW_REGISTER_TYPE_V &&
this->type != BRW_REGISTER_TYPE_UV &&
this->type != BRW_REGISTER_TYPE_VF)) {
this->stride = 0;
}
}
bool