On Sun, Oct 11, 2015 at 03:29:43AM +0200, Marek Olšák wrote:
> From: Marek Olšák <marek.ol...@amd.com>
>
> This removes "v_mov v0, 0" which typically occurs before exports.
>
Reviewed-by: Tom Stellard <thomas.stell...@amd.com>
> Totals:
> SGPRS: 345216 -> 344552 (-0.19 %)
> VGPRS: 197684 -> 197132 (-0.28 %)
> Code Size: 7390408 -> 7375376 (-0.20 %) bytes
> LDS: 91 -> 91 (0.00 %) blocks
> Scratch: 1842176 -> 1679360 (-8.84 %) bytes per wave
>
> Totals from affected shaders:
> SGPRS: 101336 -> 100672 (-0.66 %)
> VGPRS: 53920 -> 53368 (-1.02 %)
> Code Size: 2170176 -> 2155144 (-0.69 %) bytes
> LDS: 2 -> 2 (0.00 %) blocks
> Scratch: 1015808 -> 852992 (-16.03 %) bytes per wave
> ---
> src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c | 19 +++++++++++++++----
> 1 file changed, 15 insertions(+), 4 deletions(-)
>
> diff --git a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
> b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
> index 2e9a013..f548d1a 100644
> --- a/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
> +++ b/src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c
> @@ -272,6 +272,15 @@ static LLVMValueRef fetch_system_value(
> return bitcast(bld_base, type, cval);
> }
>
> +static LLVMValueRef si_build_alloca_undef(struct gallivm_state *gallivm,
> + LLVMTypeRef type,
> + const char *name)
> +{
> + LLVMValueRef ptr = lp_build_alloca(gallivm, type, name);
> + LLVMBuildStore(gallivm->builder, LLVMGetUndef(type), ptr);
> + return ptr;
> +}
> +
> static void emit_declaration(
> struct lp_build_tgsi_context * bld_base,
> const struct tgsi_full_declaration *decl)
> @@ -285,7 +294,7 @@ static void emit_declaration(
> for (idx = decl->Range.First; idx <= decl->Range.Last; idx++) {
> unsigned chan;
> for (chan = 0; chan < TGSI_NUM_CHANNELS; chan++) {
> - ctx->soa.addr[idx][chan] = lp_build_alloca(
> + ctx->soa.addr[idx][chan] =
> si_build_alloca_undef(
> &ctx->gallivm,
> ctx->soa.bld_base.uint_bld.elem_type,
> "");
> }
> @@ -315,8 +324,9 @@ static void emit_declaration(
> for (idx = first; idx <= last; idx++) {
> for (i = 0; i < TGSI_NUM_CHANNELS; i++) {
> ctx->temps[idx * TGSI_NUM_CHANNELS + i] =
> - lp_build_alloca(bld_base->base.gallivm,
> bld_base->base.vec_type,
> - "temp");
> +
> si_build_alloca_undef(bld_base->base.gallivm,
> +
> bld_base->base.vec_type,
> + "temp");
> }
> }
> break;
> @@ -347,7 +357,8 @@ static void emit_declaration(
> unsigned chan;
> assert(idx < RADEON_LLVM_MAX_OUTPUTS);
> for (chan = 0; chan < TGSI_NUM_CHANNELS; chan++) {
> - ctx->soa.outputs[idx][chan] =
> lp_build_alloca(&ctx->gallivm,
> + ctx->soa.outputs[idx][chan] =
> si_build_alloca_undef(
> + &ctx->gallivm,
> ctx->soa.bld_base.base.elem_type, "");
> }
> }
> --
> 2.1.4
>
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> mesa-dev@lists.freedesktop.org
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