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gallium: allow 512-bit vectors 

Increase the max allowed vector size from 256 to 512.

No piglit llvmpipe regressions running on avx2.

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
This commit is contained in:
Tim Rowley 2017-10-10 11:07:11 -05:00
parent fe7fab4be5
commit 9cad9cbaf8
2 changed files with 9 additions and 9 deletions
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14
src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
View File

@ -1272,9 +1272,9 @@ emit_fetch_constant(
/**
* Fetch 64-bit values from two separate channels.
* 64-bit values are stored split across two channels, like xy and zw.
* This function creates a set of 16 floats,
* This function creates a set of vec_length*2 floats,
* extracts the values from the two channels,
* puts them in the correct place, then casts to 8 64-bits.
* puts them in the correct place, then casts to vec_length 64-bits.
*/
static LLVMValueRef
emit_fetch_64bit(
@ -1289,9 +1289,9 @@ emit_fetch_64bit(
LLVMValueRef res;
struct lp_build_context *bld_fetch = stype_to_fetch(bld_base, stype);
int i;
LLVMValueRef shuffles[16];
LLVMValueRef shuffles[2 * (LP_MAX_VECTOR_WIDTH/32)];
int len = bld_base->base.type.length * 2;
assert(len <= 16);
assert(len <= (2 * (LP_MAX_VECTOR_WIDTH/32)));
for (i = 0; i < bld_base->base.type.length * 2; i+=2) {
shuffles[i] = lp_build_const_int32(gallivm, i / 2);
@ -1691,7 +1691,7 @@ emit_fetch_deriv(
}
/**
* store an array of 8 64-bit into two arrays of 8 floats
* store an array of vec-length 64-bit into two arrays of vec_length floats
* i.e.
* value is d0, d1, d2, d3 etc.
* each 64-bit has high and low pieces x, y
@ -1710,8 +1710,8 @@ emit_store_64bit_chan(struct lp_build_tgsi_context *bld_base,
struct lp_build_context *float_bld = &bld_base->base;
unsigned i;
LLVMValueRef temp, temp2;
LLVMValueRef shuffles[8];
LLVMValueRef shuffles2[8];
LLVMValueRef shuffles[LP_MAX_VECTOR_WIDTH/32];
LLVMValueRef shuffles2[LP_MAX_VECTOR_WIDTH/32];
for (i = 0; i < bld_base->base.type.length; i++) {
shuffles[i] = lp_build_const_int32(gallivm, i * 2);

4
src/gallium/auxiliary/gallivm/lp_bld_type.h
View File

@ -59,7 +59,7 @@ extern unsigned lp_native_vector_width;
* Should only be used when lp_native_vector_width isn't available,
* i.e. sizing/alignment of non-malloced variables.
*/
#define LP_MAX_VECTOR_WIDTH 256
#define LP_MAX_VECTOR_WIDTH 512
/**
* Minimum vector alignment for static variable alignment
@ -67,7 +67,7 @@ extern unsigned lp_native_vector_width;
* It should always be a constant equal to LP_MAX_VECTOR_WIDTH/8. An
* expression is non-portable.
*/
#define LP_MIN_VECTOR_ALIGN 32
#define LP_MIN_VECTOR_ALIGN 64
/**
* Several functions can only cope with vectors of length up to this value.