Module: Mesa
Branch: master
Commit: 9cad9cbaf89b50ec9e15a7e0fef35fc2e4270550
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=9cad9cbaf89b50ec9e15a7e0fef35fc2e4270550
Author: Tim Rowley <timothy.o.row...@intel.com>
Date: Tue Oct 10 11:07:11 2017 -0500
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 <jfons...@vmware.com>
Reviewed-by: Roland Scheidegger <srol...@vmware.com>
---
src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c | 14 +++++++-------
src/gallium/auxiliary/gallivm/lp_bld_type.h | 4 ++--
2 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
index de18f629cd..97efc3a399 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
@@ -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);
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_type.h
b/src/gallium/auxiliary/gallivm/lp_bld_type.h
index afe8722b05..62f1f85461 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_type.h
+++ b/src/gallium/auxiliary/gallivm/lp_bld_type.h
@@ -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.
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