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When building LLVM as a (potentially dynamic) library that can be linked against by multiple compilers, the default triple is not really meaningful. We allow to explicitely set it to an empty string when configuring LLVM. In this case, said "target independent" tests in the test suite that are using the default triple are disabled by matching the newly available feature "default_triple". Reviewers: probinson, echristo Differential Revision: http://reviews.llvm.org/D12660 From: Mehdi Amini <mehdi.amini@apple.com> llvm-svn: 247775
15 lines
590 B
LLVM
15 lines
590 B
LLVM
; RUN: llc < %s
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; REQUIRES: default_triple
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; Examples that exhibits a bug in DAGCombine. The case is triggered by the
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; following program. The bug is DAGCombine assumes that the bit convert
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; preserves the number of elements so the optimization code tries to read
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; through the 3rd mask element, which doesn't exist.
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define i32 @update(<2 x i64> %val1, <2 x i64> %val2) nounwind readnone {
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entry:
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%shuf = shufflevector <2 x i64> %val1, <2 x i64> %val2, <2 x i32> <i32 0, i32 3>
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%bit = bitcast <2 x i64> %shuf to <4 x i32>
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%res = extractelement <4 x i32> %bit, i32 3
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ret i32 %res
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}
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