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Change error to warning when a profile cannot be found.

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When the profile for a function cannot be applied, we use to emit an
error. This seems extreme. The compiler can continue, it's just that the
optimization opportunities won't include profile information.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220386 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Diego Novillo 2014-10-22 13:36:35 +00:00
parent 013cbf2f1a
commit 79ca2c234d
2 changed files with 5 additions and 3 deletions
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4
lib/Transforms/Scalar/SampleProfile.cpp
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@ -673,7 +673,9 @@ unsigned SampleProfileLoader::getFunctionLoc(Function &F) {
// If could not find the start of \p F, emit a diagnostic to inform the user
// about the missed opportunity.
F.getContext().diagnose(DiagnosticInfoSampleProfile(
"No debug information found in function " + F.getName()));
"No debug information found in function " + F.getName() +
": Function profile not used",
DS_Warning));
return 0;
}

4
test/Transforms/SampleProfile/syntax.ll
View File

@ -1,4 +1,4 @@
; RUN: not opt < %s -sample-profile -sample-profile-file=%S/Inputs/syntax.prof 2>&1 | FileCheck -check-prefix=NO-DEBUG %s
; RUN: opt < %s -sample-profile -sample-profile-file=%S/Inputs/syntax.prof 2>&1 | FileCheck -check-prefix=NO-DEBUG %s
; RUN: not opt < %s -sample-profile -sample-profile-file=missing.prof 2>&1 | FileCheck -check-prefix=MISSING-FILE %s
; RUN: not opt < %s -sample-profile -sample-profile-file=%S/Inputs/bad_fn_header.prof 2>&1 | FileCheck -check-prefix=BAD-FN-HEADER %s
; RUN: not opt < %s -sample-profile -sample-profile-file=%S/Inputs/bad_sample_line.prof 2>&1 | FileCheck -check-prefix=BAD-SAMPLE-LINE %s
@ -11,7 +11,7 @@ define void @empty() {
entry:
ret void
}
; NO-DEBUG: error: No debug information found in function empty
; NO-DEBUG: warning: No debug information found in function empty: Function profile not used
; MISSING-FILE: error: missing.prof:
; BAD-FN-HEADER: error: {{.*}}bad_fn_header.prof:1: Expected 'mangled_name:NUM:NUM', found 3empty:100:BAD
; BAD-SAMPLE-LINE: error: {{.*}}bad_sample_line.prof:3: Expected 'NUM[.NUM]: NUM[ mangled_name:NUM]*', found 1: BAD