aaron/ispc
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Fixes for intrinsics unsupported in earlier LLVM versions.

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Specifically, don't use the half/float conversion routines with
LLVM 3.0, and don't try to use RDRAND with anything before LLVM 3.2.
This commit is contained in:
Matt Pharr
2012-07-13 12:14:10 -07:00
parent 9a1932eaf7
commit 98b2e0e426
5 changed files with 47 additions and 6 deletions
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18
ispc.cpp
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@@ -328,8 +328,14 @@ Target::GetTarget(const char *arch, const char *cpu, const char *isa,
t->attributes = "+avx,+popcnt,+cmov,+f16c,+rdrand";
t->maskingIsFree = false;
t->maskBitCount = 32;
#if !defined(LLVM_3_0)
// LLVM 3.1+ only
t->hasHalf = true;
#if !defined(LLVM_3_1)
// LLVM 3.2+ only
t->hasRand = true;
#endif
#endif
}
else if (!strcasecmp(isa, "avx1.1-x2")) {
t->isa = Target::AVX11;
@@ -338,8 +344,14 @@ Target::GetTarget(const char *arch, const char *cpu, const char *isa,
t->attributes = "+avx,+popcnt,+cmov,+f16c,+rdrand";
t->maskingIsFree = false;
t->maskBitCount = 32;
#if !defined(LLVM_3_0)
// LLVM 3.1+ only
t->hasHalf = true;
#if !defined(LLVM_3_1)
// LLVM 3.2+ only
t->hasRand = true;
#endif
#endif
}
#ifndef LLVM_3_0
else if (!strcasecmp(isa, "avx2")) {
@@ -350,7 +362,10 @@ Target::GetTarget(const char *arch, const char *cpu, const char *isa,
t->maskingIsFree = false;
t->maskBitCount = 32;
t->hasHalf = true;
#if !defined(LLVM_3_1)
// LLVM 3.2+ only
t->hasRand = true;
#endif
}
else if (!strcasecmp(isa, "avx2-x2")) {
t->isa = Target::AVX2;
@@ -360,7 +375,10 @@ Target::GetTarget(const char *arch, const char *cpu, const char *isa,
t->maskingIsFree = false;
t->maskBitCount = 32;
t->hasHalf = true;
#if !defined(LLVM_3_1)
// LLVM 3.2+ only
t->hasRand = true;
#endif
}
#endif // !LLVM_3_0
else {