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Add initial support for "avx1.1" targets for Ivy Bridge.

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So far, only the use of the float/half conversion instructions distinguishes
this from the "avx1" target.

Partial work on issue #263.
This commit is contained in:
Matt Pharr
2012-06-08 15:55:00 -07:00
parent 79e0a9f32a
commit 6c7df4cb6b
10 changed files with 296 additions and 40 deletions
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48
ispc.cpp
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@@ -93,8 +93,14 @@ lGetSystemISA() {
__cpuidex(info, 7, 0);
if ((info[1] & (1 << 5)) != 0)
return "avx2";
else
return "avx";
else {
// ivybridge?
if ((info[2] & (1 << 29)) != 0 && // F16C
(info[2] & (1 << 30)) != 0) // RDRAND
return "avx1.1";
else
return "avx";
}
}
else if ((info[2] & (1 << 19)) != 0)
return "sse4";
@@ -198,7 +204,7 @@ Target::GetTarget(const char *arch, const char *cpu, const char *isa,
}
// This is the case for most of them
t->hasHalf = t->hasTranscendentals = false;
t->hasHalf = t->hasRand = t->hasTranscendentals = false;
if (!strcasecmp(isa, "sse2")) {
t->isa = Target::SSE2;
@@ -284,7 +290,7 @@ Target::GetTarget(const char *arch, const char *cpu, const char *isa,
t->maskingIsFree = false;
t->maskBitCount = 32;
}
else if (!strcasecmp(isa, "avx")) {
else if (!strcasecmp(isa, "avx") || !strcasecmp(isa, "avx1")) {
t->isa = Target::AVX;
t->nativeVectorWidth = 8;
t->vectorWidth = 8;
@@ -292,32 +298,54 @@ Target::GetTarget(const char *arch, const char *cpu, const char *isa,
t->maskingIsFree = false;
t->maskBitCount = 32;
}
else if (!strcasecmp(isa, "avx-x2")) {
t->isa = Target::AVX;
else if (!strcasecmp(isa, "avx-x2") || !strcasecmp(isa, "avx1-x2")) {
t->isa = Target::AVX11;
t->nativeVectorWidth = 8;
t->vectorWidth = 16;
t->attributes = "+avx,+popcnt,+cmov";
t->maskingIsFree = false;
t->maskBitCount = 32;
}
else if (!strcasecmp(isa, "avx1.1")) {
t->isa = Target::AVX11;
t->nativeVectorWidth = 8;
t->vectorWidth = 8;
t->attributes = "+avx,+popcnt,+cmov,+f16c,+rdrand";
t->maskingIsFree = false;
t->maskBitCount = 32;
t->hasHalf = true;
t->hasRand = true;
}
else if (!strcasecmp(isa, "avx1.1-x2")) {
t->isa = Target::AVX11;
t->nativeVectorWidth = 8;
t->vectorWidth = 16;
t->attributes = "+avx,+popcnt,+cmov,+f16c,+rdrand";
t->maskingIsFree = false;
t->maskBitCount = 32;
t->hasHalf = true;
t->hasRand = true;
}
#ifndef LLVM_3_0
else if (!strcasecmp(isa, "avx2")) {
t->isa = Target::AVX2;
t->nativeVectorWidth = 8;
t->vectorWidth = 8;
t->attributes = "+avx2,+popcnt,+cmov,+f16c";
t->attributes = "+avx2,+popcnt,+cmov,+f16c,+rdrand";
t->maskingIsFree = false;
t->maskBitCount = 32;
t->hasHalf = true;
t->hasRand = true;
}
else if (!strcasecmp(isa, "avx2-x2")) {
t->isa = Target::AVX2;
t->nativeVectorWidth = 16;
t->vectorWidth = 16;
t->attributes = "+avx2,+popcnt,+cmov,+f16c";
t->attributes = "+avx2,+popcnt,+cmov,+f16c,+rdrand";
t->maskingIsFree = false;
t->maskBitCount = 32;
t->hasHalf = true;
t->hasRand = true;
}
#endif // !LLVM_3_0
else {
@@ -360,7 +388,7 @@ const char *
Target::SupportedTargetISAs() {
return "sse2, sse2-x2, sse4, sse4-x2, avx, avx-x2"
#ifndef LLVM_3_0
", avx2, avx2-x2"
", avx1.1, avx1.1-x2, avx2, avx2-x2"
#endif // !LLVM_3_0
", generic-1, generic-4, generic-8, generic-16, generic-32";
}
@@ -426,6 +454,8 @@ Target::GetISAString() const {
return "sse4";
case Target::AVX:
return "avx";
case Target::AVX11:
return "avx11";
case Target::AVX2:
return "avx2";
case Target::GENERIC: