http://llvm.org/bugs/show_bug.cgi?id=15926
Bug ID: 15926
Summary: Assertion `getInductionVars()->size() && "No induction
variables"' failed.
Product: new-bugs
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
test case by csmith/creduce
% clang -m32 -O3 z.c -c
# or:
# clang -cc1 -triple i386-unknown-linux-gnu -emit-obj -O3 -backend-option
-vectorize-loops -o z.o -x c z.c
llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:2525: bool <anonymous
namespace>::LoopVectorizationLegality::canVectorizeInstrs(): Assertion
`getInductionVars()->size() && "No induction variables"' failed.
3. Running pass 'CallGraph Pass Manager' on module 'z.c'.
4. Running pass 'Loop Pass Manager' on function '@fn1'
5. Running pass 'Loop Vectorization' on basic block '%for.body'
test case:
long long a;
volatile int x;
void fn1 () {
for (a = 0; a >= 0; ++a)
x = 0;
}
This reduced test case is not standard conforming (integer overflow)
but the compiler should not fail in an assertion.
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