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authorIan Romanick <ian.d.romanick@intel.com>2017-11-13 11:17:41 -0800
committerIan Romanick <ian.d.romanick@intel.com>2018-03-29 14:09:23 -0700
commitd76c204d0564701b4b8b6a2bdda50e2939683e66 (patch)
treeedcf51df711640ffd89326079f10b1dcf65f311b /src/gallium/drivers/vc4
parenta3a16d4aa7e5a22816226d8e7417138164b10525 (diff)
util: Move util_is_power_of_two to bitscan.h and rename to util_is_power_of_two_or_zero
The new name make the zero-input behavior more obvious. The next patch adds a new function with different zero-input behavior. Signed-off-by: Ian Romanick <ian.d.romanick@intel.com> Suggested-by: Matt Turner <mattst88@gmail.com> Reviewed-by: Alejandro PiƱeiro <apinheiro@igalia.com>
Diffstat (limited to 'src/gallium/drivers/vc4')
-rw-r--r--src/gallium/drivers/vc4/vc4_program.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/gallium/drivers/vc4/vc4_program.c b/src/gallium/drivers/vc4/vc4_program.c
index 2ec6aa471d4..367613130bb 100644
--- a/src/gallium/drivers/vc4/vc4_program.c
+++ b/src/gallium/drivers/vc4/vc4_program.c
@@ -313,7 +313,7 @@ static struct qreg
ntq_get_alu_src(struct vc4_compile *c, nir_alu_instr *instr,
unsigned src)
{
- assert(util_is_power_of_two(instr->dest.write_mask));
+ assert(util_is_power_of_two_or_zero(instr->dest.write_mask));
unsigned chan = ffs(instr->dest.write_mask) - 1;
struct qreg r = ntq_get_src(c, instr->src[src].src,
instr->src[src].swizzle[chan]);
@@ -1363,7 +1363,7 @@ ntq_emit_alu(struct vc4_compile *c, nir_alu_instr *instr)
/* We have a scalar result, so the instruction should only have a
* single channel written to.
*/
- assert(util_is_power_of_two(instr->dest.write_mask));
+ assert(util_is_power_of_two_or_zero(instr->dest.write_mask));
ntq_store_dest(c, &instr->dest.dest,
ffs(instr->dest.write_mask) - 1, result);
}