llvm-stress: don't make vectors of x86_mmx type
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
diff --git a/tools/llvm-stress/llvm-stress.cpp b/tools/llvm-stress/llvm-stress.cpp
index c095059..7da80bc 100644
--- a/tools/llvm-stress/llvm-stress.cpp
+++ b/tools/llvm-stress/llvm-stress.cpp
@@ -202,11 +202,17 @@
/// 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);