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Emit warnings if vectorization is forced and fails.

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This patch modifies the existing DiagnosticInfo system to create a generic base
class that is inherited to produce diagnostic-based warnings. This is used by
the loop vectorizer to trigger a warning when vectorization is forced and
fails. Several tests have been added to verify this behavior.

Reviewed by: Arnold Schwaighofer


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213110 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tyler Nowicki
2014-07-16 00:36:00 +00:00
parent 7e752a311a
commit 77f03040d5
6 changed files with 199 additions and 28 deletions
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test/Transforms/LoopVectorize/X86/vectorization-remarks-missed.ll
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@@ -28,6 +28,7 @@
; CHECK: remark: source.cpp:13:5: loop not vectorized: vector width and interleave count are explicitly set to 1
; CHECK: remark: source.cpp:19:5: loop not vectorized: cannot identify array bounds
; CHECK: remark: source.cpp:19:5: loop not vectorized: vectorization is explicitly enabled
; CHECK: warning: source.cpp:19:5: loop not vectorized: failed explicitly specified loop vectorization
; CHECK: _Z4testPii
; CHECK-NOT: x i32>