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llvmpipe: Emit SSE intrinsics based on runtime cpu capability check.

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Note that llvmpipe still doesn't run on any processor yet: if you don't
have a recent processor with SSE4.1 you will still likely end up
hitting a code path for which a generic non-sse4 version is not
implemented yet.
This commit is contained in:
José Fonseca
2009-09-29 13:58:58 +01:00
parent a81fb2a0d2
commit 7cda8ea44c
4 changed files with 37 additions and 51 deletions
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src/gallium/drivers/llvmpipe/lp_bld_arit.c
+27 -45
View File
@@ -48,6 +48,7 @@
#include "util/u_memory.h"
#include "util/u_debug.h"
#include "util/u_string.h"
#include "util/u_cpu_detect.h"
#include "lp_bld_type.h"
#include "lp_bld_const.h"
@@ -119,30 +120,28 @@ lp_build_max_simple(struct lp_build_context *bld,
/* TODO: optimize the constant case */
#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
if(type.width * type.length == 128) {
if(type.floating) {
if(type.width == 32)
if(type.width == 32 && util_cpu_caps.has_sse)
intrinsic = "llvm.x86.sse.max.ps";
if(type.width == 64)
if(type.width == 64 && util_cpu_caps.has_sse2)
intrinsic = "llvm.x86.sse2.max.pd";
}
else {
if(type.width == 8 && !type.sign)
if(type.width == 8 && !type.sign && util_cpu_caps.has_sse2)
intrinsic = "llvm.x86.sse2.pmaxu.b";
if(type.width == 8 && type.sign)
if(type.width == 8 && type.sign && util_cpu_caps.has_sse4_1)
intrinsic = "llvm.x86.sse41.pmaxsb";
if(type.width == 16 && !type.sign)
if(type.width == 16 && !type.sign && util_cpu_caps.has_sse4_1)
intrinsic = "llvm.x86.sse41.pmaxuw";
if(type.width == 16 && type.sign)
if(type.width == 16 && type.sign && util_cpu_caps.has_sse2)
intrinsic = "llvm.x86.sse2.pmaxs.w";
if(type.width == 32 && !type.sign)
if(type.width == 32 && !type.sign && util_cpu_caps.has_sse4_1)
intrinsic = "llvm.x86.sse41.pmaxud";
if(type.width == 32 && type.sign)
if(type.width == 32 && type.sign && util_cpu_caps.has_sse4_1)
intrinsic = "llvm.x86.sse41.pmaxsd";
}
}
#endif
if(intrinsic)
return lp_build_intrinsic_binary(bld->builder, intrinsic, lp_build_vec_type(bld->type), a, b);
@@ -204,15 +203,14 @@ lp_build_add(struct lp_build_context *bld,
if(a == bld->one || b == bld->one)
return bld->one;
#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
if(type.width * type.length == 128 &&
if(util_cpu_caps.has_sse2 &&
type.width * type.length == 128 &&
!type.floating && !type.fixed) {
if(type.width == 8)
intrinsic = type.sign ? "llvm.x86.sse2.padds.b" : "llvm.x86.sse2.paddus.b";
if(type.width == 16)
intrinsic = type.sign ? "llvm.x86.sse2.padds.w" : "llvm.x86.sse2.paddus.w";
}
#endif
if(intrinsic)
return lp_build_intrinsic_binary(bld->builder, intrinsic, lp_build_vec_type(bld->type), a, b);
@@ -257,15 +255,14 @@ lp_build_sub(struct lp_build_context *bld,
if(b == bld->one)
return bld->zero;
#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
if(type.width * type.length == 128 &&
if(util_cpu_caps.has_sse2 &&
type.width * type.length == 128 &&
!type.floating && !type.fixed) {
if(type.width == 8)
intrinsic = type.sign ? "llvm.x86.sse2.psubs.b" : "llvm.x86.sse2.psubus.b";
if(type.width == 16)
intrinsic = type.sign ? "llvm.x86.sse2.psubs.w" : "llvm.x86.sse2.psubus.w";
}
#endif
if(intrinsic)
return lp_build_intrinsic_binary(bld->builder, intrinsic, lp_build_vec_type(bld->type), a, b);
@@ -419,8 +416,7 @@ lp_build_mul(struct lp_build_context *bld,
return bld->undef;
if(!type.floating && !type.fixed && type.norm) {
#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
if(type.width == 8 && type.length == 16) {
if(util_cpu_caps.has_sse2 && type.width == 8 && type.length == 16) {
LLVMTypeRef i16x8 = LLVMVectorType(LLVMInt16Type(), 8);
LLVMTypeRef i8x16 = LLVMVectorType(LLVMInt8Type(), 16);
static LLVMValueRef ml = NULL;
@@ -456,7 +452,6 @@ lp_build_mul(struct lp_build_context *bld,
return ab;
}
#endif
/* FIXME */
assert(0);
@@ -493,10 +488,8 @@ lp_build_div(struct lp_build_context *bld,
if(LLVMIsConstant(a) && LLVMIsConstant(b))
return LLVMConstFDiv(a, b);
#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
if(type.width == 32 && type.length == 4)
if(util_cpu_caps.has_sse && type.width == 32 && type.length == 4)
return lp_build_mul(bld, a, lp_build_rcp(bld, b));
#endif
return LLVMBuildFDiv(bld->builder, a, b, "");
}
@@ -606,8 +599,7 @@ lp_build_abs(struct lp_build_context *bld,
return a;
}
#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
if(type.width*type.length == 128) {
if(type.width*type.length == 128 && util_cpu_caps.has_ssse3) {
switch(type.width) {
case 8:
return lp_build_intrinsic_unary(bld->builder, "llvm.x86.ssse3.pabs.b.128", vec_type, a);
@@ -617,7 +609,6 @@ lp_build_abs(struct lp_build_context *bld,
return lp_build_intrinsic_unary(bld->builder, "llvm.x86.ssse3.pabs.d.128", vec_type, a);
}
}
#endif
return lp_build_max(bld, a, LLVMBuildNeg(bld->builder, a, ""));
}
@@ -710,9 +701,8 @@ lp_build_round(struct lp_build_context *bld,
assert(type.floating);
#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
return lp_build_round_sse41(bld, a, LP_BUILD_ROUND_SSE41_NEAREST);
#endif
if(util_cpu_caps.has_sse4_1)
return lp_build_round_sse41(bld, a, LP_BUILD_ROUND_SSE41_NEAREST);
/* FIXME */
assert(0);
@@ -728,9 +718,8 @@ lp_build_floor(struct lp_build_context *bld,
assert(type.floating);
#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
return lp_build_round_sse41(bld, a, LP_BUILD_ROUND_SSE41_FLOOR);
#endif
if(util_cpu_caps.has_sse4_1)
return lp_build_round_sse41(bld, a, LP_BUILD_ROUND_SSE41_FLOOR);
/* FIXME */
assert(0);
@@ -746,9 +735,8 @@ lp_build_ceil(struct lp_build_context *bld,
assert(type.floating);
#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
return lp_build_round_sse41(bld, a, LP_BUILD_ROUND_SSE41_CEIL);
#endif
if(util_cpu_caps.has_sse4_1)
return lp_build_round_sse41(bld, a, LP_BUILD_ROUND_SSE41_CEIL);
/* FIXME */
assert(0);
@@ -764,9 +752,8 @@ lp_build_trunc(struct lp_build_context *bld,
assert(type.floating);
#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
return lp_build_round_sse41(bld, a, LP_BUILD_ROUND_SSE41_TRUNCATE);
#endif
if(util_cpu_caps.has_sse4_1)
return lp_build_round_sse41(bld, a, LP_BUILD_ROUND_SSE41_TRUNCATE);
/* FIXME */
assert(0);
@@ -837,11 +824,9 @@ lp_build_rcp(struct lp_build_context *bld,
if(LLVMIsConstant(a))
return LLVMConstFDiv(bld->one, a);
/* XXX: is this really necessary? */
#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
if(type.width == 32 && type.length == 4)
if(util_cpu_caps.has_sse && type.width == 32 && type.length == 4)
/* FIXME: improve precision */
return lp_build_intrinsic_unary(bld->builder, "llvm.x86.sse.rcp.ps", lp_build_vec_type(type), a);
#endif
return LLVMBuildFDiv(bld->builder, bld->one, a, "");
}
@@ -858,11 +843,8 @@ lp_build_rsqrt(struct lp_build_context *bld,
assert(type.floating);
/* XXX: is this really necessary? */
#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
if(type.width == 32 && type.length == 4)
if(util_cpu_caps.has_sse && type.width == 32 && type.length == 4)
return lp_build_intrinsic_unary(bld->builder, "llvm.x86.sse.rsqrt.ps", lp_build_vec_type(type), a);
#endif
return lp_build_rcp(bld, lp_build_sqrt(bld, a));
}
src/gallium/drivers/llvmpipe/lp_bld_conv.c
+3 -4
View File
@@ -63,6 +63,7 @@
#include "util/u_debug.h"
#include "util/u_math.h"
#include "util/u_cpu_detect.h"
#include "lp_bld_type.h"
#include "lp_bld_const.h"
@@ -334,8 +335,7 @@ lp_build_pack2(LLVMBuilderRef builder,
assert(!src_type.floating);
assert(!dst_type.floating);
#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
if(src_type.width * src_type.length == 128) {
if(util_cpu_caps.has_sse2 && src_type.width * src_type.length == 128) {
/* All X86 non-interleaved pack instructions all take signed inputs and
* saturate them, so saturate beforehand. */
if(!src_type.sign && !clamped) {
@@ -349,7 +349,7 @@ lp_build_pack2(LLVMBuilderRef builder,
switch(src_type.width) {
case 32:
if(dst_type.sign)
if(dst_type.sign || !util_cpu_caps.has_sse4_1)
res = lp_build_intrinsic_binary(builder, "llvm.x86.sse2.packssdw.128", src_vec_type, lo, hi);
else
/* PACKUSDW is the only instrinsic with a consistent signature */
@@ -372,7 +372,6 @@ lp_build_pack2(LLVMBuilderRef builder,
res = LLVMBuildBitCast(builder, res, dst_vec_type, "");
return res;
}
#endif
lo = LLVMBuildBitCast(builder, lo, dst_vec_type, "");
hi = LLVMBuildBitCast(builder, hi, dst_vec_type, "");
src/gallium/drivers/llvmpipe/lp_bld_logic.c
+4 -2
View File
@@ -33,6 +33,8 @@
*/
#include "util/u_cpu_detect.h"
#include "lp_bld_type.h"
#include "lp_bld_const.h"
#include "lp_bld_intr.h"
@@ -65,7 +67,7 @@ lp_build_cmp(struct lp_build_context *bld,
#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
if(type.width * type.length == 128) {
if(type.floating) {
if(type.floating && util_cpu_caps.has_sse) {
LLVMValueRef args[3];
unsigned cc;
boolean swap;
@@ -114,7 +116,7 @@ lp_build_cmp(struct lp_build_context *bld,
res = LLVMBuildBitCast(bld->builder, res, int_vec_type, "");
return res;
}
else {
else if(util_cpu_caps.has_sse2) {
static const struct {
unsigned swap:1;
unsigned eq:1;
src/gallium/drivers/llvmpipe/lp_jit.c
+3
View File
@@ -36,6 +36,7 @@
#include <llvm-c/Transforms/Scalar.h>
#include "util/u_memory.h"
#include "util/u_cpu_detect.h"
#include "lp_screen.h"
#include "lp_bld_intr.h"
#include "lp_jit.h"
@@ -147,6 +148,8 @@ lp_jit_screen_init(struct llvmpipe_screen *screen)
{
char *error = NULL;
util_cpu_detect();
#ifdef LLVM_NATIVE_ARCH
LLVMLinkInJIT();
LLVMInitializeNativeTarget();