Tests for instrumentation profile bad encoding.

1- Detect invalid count
RUN: not llvm-profdata show %p/Inputs/invalid-count-later.proftext 2>&1 | FileCheck %s --check-prefix=INVALID-COUNT-LATER-SHOW
INVALID-COUNT-LATER-SHOW: error: {{.*}}invalid-count-later.proftext: Malformed instrumentation profile data

RUN: not llvm-profdata merge %p/Inputs/invalid-count-later.proftext %p/Inputs/invalid-count-later.proftext -o %t.out 2>&1 | FileCheck %s --check-prefix=INVALID-COUNT-LATER-MERGE
RUN: not llvm-profdata merge -failure-mode=all %p/Inputs/invalid-count-later.proftext %p/Inputs/invalid-count-later.proftext -o %t.out 2>&1 | FileCheck %s --check-prefix=INVALID-COUNT-LATER-MERGE
INVALID-COUNT-LATER-MERGE: warning: {{.*}}invalid-count-later.proftext: Malformed instrumentation profile data
INVALID-COUNT-LATER-MERGE-NEXT: warning: {{.*}}invalid-count-later.proftext: Malformed instrumentation profile data
INVALID-COUNT-LATER-MERGE-NEXT: error: No profiles could be merged.

2- Detect bad hash
RUN: not llvm-profdata show %p/Inputs/bad-hash.proftext 2>&1 | FileCheck %s --check-prefix=BAD-HASH-SHOW
BAD-HASH-SHOW: error: {{.*}}bad-hash.proftext: Malformed instrumentation profile data

RUN: not llvm-profdata merge %p/Inputs/bad-hash.proftext %p/Inputs/bad-hash.proftext -o %t.out 2>&1 | FileCheck %s --check-prefix=BAD-HASH-MERGE
BAD-HASH-MERGE: warning: {{.*}}bad-hash.proftext: Malformed instrumentation profile data
BAD-HASH-NEXT: error: No profiles could be merged.

3- Detect no counts
RUN: not llvm-profdata show %p/Inputs/no-counts.proftext 2>&1 | FileCheck %s --check-prefix=NO-COUNTS
NO-COUNTS: error: {{.*}}no-counts.proftext: Malformed instrumentation profile data

4- Detect binary input
RUN: not llvm-profdata show %p/Inputs/text-format-errors.text.bin 2>&1 | FileCheck %s --check-prefix=BINARY
BINARY: error: {{.+}}: Unrecognized instrumentation profile encoding format
BINARY: Perhaps you forgot to use the --sample option?

5- Detect malformed value profile data
RUN: not llvm-profdata show %p/Inputs/vp-malform.proftext 2>&1 | FileCheck %s --check-prefix=VP
RUN: not llvm-profdata show %p/Inputs/vp-malform2.proftext 2>&1 | FileCheck %s --check-prefix=VP
VP: Malformed instrumentation profile data

6- Detect truncated value profile data
RUN: not llvm-profdata show %p/Inputs/vp-truncate.proftext 2>&1 | FileCheck %s --check-prefix=VPTRUNC
VPTRUNC: Truncated profile data