[LLVMbugs] [Bug 15391] New: signext on vector parameter raises assertion

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=15391

            Bug ID: 15391
           Summary: signext on vector parameter raises assertion
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Core LLVM classes
          Assignee: unassignedbugs at nondot.org
          Reporter: leissa at cs.uni-saarland.de
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

This:

define <4 x float> @masked_add_1(<4 x i1> signext %mask, <4 x float> %a, <4 x
float> %b) { ... }

or this: 

define <4 x float> @masked_add_32(<4 x i32> signext %mask, <4 x float> %a, <4 x
float> %b) { ... }


will raise an assertion due to the signext attribute.

backtrace:

#0  0x00007ffff6e2d2c5 in raise () from /usr/lib/libc.so.6
#1  0x00007ffff6e2e748 in abort () from /usr/lib/libc.so.6
#2  0x000000000137e601 in (anonymous namespace)::Verifier::abortIfBroken
(this=0x1e161a0) at /home/roland/projects/sierra/llvm/lib/IR/Verifier.cpp:226
#3  0x000000000137e2f9 in (anonymous namespace)::Verifier::runOnFunction
(this=0x1e161a0, F=...) at
/home/roland/projects/sierra/llvm/lib/IR/Verifier.cpp:179
#4  0x0000000001352d1d in llvm::FPPassManager::runOnFunction (this=0x1e16af0,
F=...) at /home/roland/projects/sierra/llvm/lib/IR/PassManager.cpp:1530
#5  0x0000000001352f0e in llvm::FPPassManager::runOnModule (this=0x1e16af0,
M=...) at /home/roland/projects/sierra/llvm/lib/IR/PassManager.cpp:1550
#6  0x00000000013532a0 in llvm::MPPassManager::runOnModule (this=0x1e06110,
M=...) at /home/roland/projects/sierra/llvm/lib/IR/PassManager.cpp:1608
#7  0x00000000013538c5 in llvm::PassManagerImpl::run (this=0x1e03be0, M=...) at
/home/roland/projects/sierra/llvm/lib/IR/PassManager.cpp:1703
#8  0x0000000001353ad7 in llvm::PassManager::run (this=0x7fffffffdfb0, M=...)
at /home/roland/projects/sierra/llvm/lib/IR/PassManager.cpp:1738
#9  0x00000000008e0307 in compileModule (argv=0x7fffffffe398, Context=...) at
/home/roland/projects/sierra/llvm/tools/llc/llc.cpp:376
#10 0x00000000008df372 in main (argc=2, argv=0x7fffffffe398) at
/home/roland/projects/sierra/llvm/tools/llc/llc.cpp:194

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