diff --git a/test/Transforms/SampleProfile/Inputs/bad_fn_header.prof b/test/Transforms/SampleProfile/Inputs/bad_fn_header.prof
new file mode 100644
index 00000000000..90459e65d04
--- /dev/null
+++ b/test/Transforms/SampleProfile/Inputs/bad_fn_header.prof
@@ -0,0 +1,6 @@
+symbol table
+1
+empty
+empty:100:BAD
+0: 0
+1: 100
diff --git a/test/Transforms/SampleProfile/Inputs/bad_sample_line.prof b/test/Transforms/SampleProfile/Inputs/bad_sample_line.prof
new file mode 100644
index 00000000000..8c0d7630f91
--- /dev/null
+++ b/test/Transforms/SampleProfile/Inputs/bad_sample_line.prof
@@ -0,0 +1,6 @@
+symbol table
+1
+empty
+empty:100:0:1
+0: 0
+1: BAD
diff --git a/test/Transforms/SampleProfile/Inputs/missing_num_syms.prof b/test/Transforms/SampleProfile/Inputs/missing_num_syms.prof
new file mode 100644
index 00000000000..7cd053611c8
--- /dev/null
+++ b/test/Transforms/SampleProfile/Inputs/missing_num_syms.prof
@@ -0,0 +1,5 @@
+symbol table
+empty
+empty:100:0:1
+0: 0
+1: 100
diff --git a/test/Transforms/SampleProfile/Inputs/missing_samples.prof b/test/Transforms/SampleProfile/Inputs/missing_samples.prof
new file mode 100644
index 00000000000..edd36c2f52f
--- /dev/null
+++ b/test/Transforms/SampleProfile/Inputs/missing_samples.prof
@@ -0,0 +1,6 @@
+symbol table
+1
+empty
+empty:100:0:10
+0: 0
+1: 100
diff --git a/test/Transforms/SampleProfile/Inputs/missing_symtab.prof b/test/Transforms/SampleProfile/Inputs/missing_symtab.prof
new file mode 100644
index 00000000000..2a826138b08
--- /dev/null
+++ b/test/Transforms/SampleProfile/Inputs/missing_symtab.prof
@@ -0,0 +1,5 @@
+1
+empty
+empty:100:0:1
+0: 0
+1: 100
diff --git a/test/Transforms/SampleProfile/syntax.ll b/test/Transforms/SampleProfile/syntax.ll
new file mode 100644
index 00000000000..baf3852f322
--- /dev/null
+++ b/test/Transforms/SampleProfile/syntax.ll
@@ -0,0 +1,17 @@
+; 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/missing_symtab.prof 2>&1 | FileCheck -check-prefix=MISSING-SYMTAB %s
+; RUN: not opt < %s -sample-profile -sample-profile-file=%S/Inputs/missing_num_syms.prof 2>&1 | FileCheck -check-prefix=MISSING-NUM-SYMS %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
+; RUN: not opt < %s -sample-profile -sample-profile-file=%S/Inputs/missing_samples.prof 2>&1 | FileCheck -check-prefix=MISSING-SAMPLES %s
+
+define void @empty() {
+entry:
+  ret void
+}
+; MISSING-FILE: LLVM ERROR: Could not open profile file missing.prof: No such file or directory
+; MISSING-SYMTAB: LLVM ERROR: {{.*}}missing_symtab.prof:1: Expected 'symbol table', found 1
+; MISSING-NUM-SYMS: LLVM ERROR: {{.*}}missing_num_syms.prof:2: Expected a number, found empty
+; BAD-FN-HEADER: LLVM ERROR: {{.*}}bad_fn_header.prof:4: Expected 'mangled_name:NUM:NUM:NUM', found empty:100:BAD
+; BAD-SAMPLE-LINE: LLVM ERROR: {{.*}}bad_sample_line.prof:6: Expected 'mangled_name:NUM:NUM:NUM', found 1: BAD
+; MISSING-SAMPLES: LLVM ERROR: {{.*}}missing_samples.prof:6: Unexpected end of file