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llvm-stress: don't make vectors of x86_mmx type

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LangRef.html says:
"There are no arrays, vectors or constants of this type."

This was hitting assertions when passing the -generate-x86-mmx
option.

PR12452.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154445 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dylan Noblesmith 2012-04-10 22:44:49 +00:00
parent cff60c1409
commit 701de8fafc
1 changed files with 7 additions and 1 deletions
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8
tools/llvm-stress/llvm-stress.cpp
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@ -202,11 +202,17 @@ protected:
/// Pick a random vector type.
Type *pickVectorType(unsigned len = (unsigned)-1) {
Type *Ty = pickScalarType();
// Pick a random vector width in the range 2**0 to 2**4.
// by adding two randoms we are generating a normal-like distribution
// around 2**3.
unsigned width = 1<<((Ran->Rand() % 3) + (Ran->Rand() % 3));
Type *Ty;
// Vectors of x86mmx are illegal; keep trying till we get something else.
do {
Ty = pickScalarType();
} while (Ty->isX86_MMXTy());
if (len != (unsigned)-1)
width = len;
return VectorType::get(Ty, width);