2 files changed, 50 insertions, 0 deletions
diff --git a/llvm/test/Transforms/SampleProfile/Inputs/coverage-warning.prof b/llvm/test/Transforms/SampleProfile/Inputs/coverage-warning.prof
new file mode 100644
index 00000000000..57989b837a0
--- /dev/null
+++ b/llvm/test/Transforms/SampleProfile/Inputs/coverage-warning.prof
@@ -0,0 +1,5 @@
+foo:30000:100
+ 2: 28000
+ 3: 1000
+# This profile is stale. Function foo() does not have a line 8 anymore.
+ 8: 1700
diff --git a/llvm/test/Transforms/SampleProfile/coverage-warning.ll b/llvm/test/Transforms/SampleProfile/coverage-warning.ll
new file mode 100644
index 00000000000..f96068002dd
--- /dev/null
+++ b/llvm/test/Transforms/SampleProfile/coverage-warning.ll
@@ -0,0 +1,45 @@
+; RUN: opt < %s -sample-profile -sample-profile-file=%S/Inputs/coverage-warning.prof -sample-profile-check-coverage=90 2>& 1 | FileCheck %s
+define i32 @foo(i32 %i) {
+; The profile has samples for line locations that are no longer present.
+; Coverage does not reach 90%, so we should get this warning:
+;
+; CHECK: warning: coverage-warning.c:1: 2 of 3 available profile records (66%) were applied
+entry:
+  %retval = alloca i32, align 4
+  %i.addr = alloca i32, align 4
+  store i32 %i, i32* %i.addr, align 4
+  %0 = load i32, i32* %i.addr, align 4, !dbg !9
+  %cmp = icmp sgt i32 %0, 1000, !dbg !10
+  br i1 %cmp, label %if.then, label %if.end, !dbg !9
+
+if.then:                                          ; preds = %entry
+  store i32 30, i32* %retval, align 4, !dbg !11
+  br label %return, !dbg !11
+
+if.end:                                           ; preds = %entry
+  store i32 3, i32* %retval, align 4, !dbg !12
+  br label %return, !dbg !12
+
+return:                                           ; preds = %if.end, %if.then
+  %1 = load i32, i32* %retval, align 4, !dbg !13
+  ret i32 %1, !dbg !13
+}
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!6, !7}
+!llvm.ident = !{!8}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 251524) (llvm/trunk 251531)", isOptimized: false, runtimeVersion: 0, emissionKind: 2, enums: !2, subprograms: !3)
+!1 = !DIFile(filename: "coverage-warning.c", directory: ".")
+!2 = !{}
+!3 = !{!4}
+!4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, function: i32 (i32)* @foo, variables: !2)
+!5 = !DISubroutineType(types: !2)
+!6 = !{i32 2, !"Dwarf Version", i32 4}
+!7 = !{i32 2, !"Debug Info Version", i32 3}
+!8 = !{!"clang version 3.8.0 (trunk 251524) (llvm/trunk 251531)"}
+!9 = !DILocation(line: 2, column: 7, scope: !4)
+!10 = !DILocation(line: 2, column: 9, scope: !4)
+!11 = !DILocation(line: 3, column: 5, scope: !4)
+!12 = !DILocation(line: 4, column: 3, scope: !4)
+!13 = !DILocation(line: 5, column: 1, scope: !4)