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diff --git a/test/tools/llvm-profdata/multiple-inputs.test b/test/tools/llvm-profdata/multiple-inputs.test
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+++ b/test/tools/llvm-profdata/multiple-inputs.test
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+Some very basic tests for the multiple input cases.
+
+RUN: llvm-profdata merge %p/Inputs/foo3-1.proftext %p/Inputs/foo3-2.proftext -o %t
+RUN: llvm-profdata show %t -all-functions -counts | FileCheck %s --check-prefix=FOO3
+RUN: llvm-profdata merge %p/Inputs/foo3-2.proftext %p/Inputs/foo3-1.proftext -o %t
+RUN: llvm-profdata show %t -all-functions -counts | FileCheck %s --check-prefix=FOO3
+FOO3: foo:
+FOO3: Counters: 3
+FOO3: Function count: 8
+FOO3: Block counts: [7, 6]
+FOO3: Total functions: 1
+FOO3: Maximum function count: 8
+FOO3: Maximum internal block count: 7
+
+RUN: llvm-profdata merge %p/Inputs/empty.proftext %p/Inputs/foo3-1.proftext -o %t
+RUN: llvm-profdata show %t -all-functions -counts | FileCheck %s --check-prefix=FOO3EMPTY
+FOO3EMPTY: foo:
+FOO3EMPTY: Counters: 3
+FOO3EMPTY: Function count: 1
+FOO3EMPTY: Block counts: [2, 3]
+FOO3EMPTY: Total functions: 1
+FOO3EMPTY: Maximum function count: 1
+FOO3EMPTY: Maximum internal block count: 3
+
+RUN: llvm-profdata merge %p/Inputs/foo3-1.proftext %p/Inputs/foo3bar3-1.proftext -o %t
+RUN: llvm-profdata show %t -all-functions -counts | FileCheck %s --check-prefix=FOO3FOO3BAR3
+FOO3FOO3BAR3: foo:
+FOO3FOO3BAR3: Counters: 3
+FOO3FOO3BAR3: Function count: 3
+FOO3FOO3BAR3: Block counts: [5, 8]
+FOO3FOO3BAR3: bar:
+FOO3FOO3BAR3: Counters: 3
+FOO3FOO3BAR3: Function count: 7
+FOO3FOO3BAR3: Block counts: [11, 13]
+FOO3FOO3BAR3: Total functions: 2
+FOO3FOO3BAR3: Maximum function count: 7
+FOO3FOO3BAR3: Maximum internal block count: 13
+
+RUN: llvm-profdata merge %p/Inputs/foo3-1.proftext %p/Inputs/bar3-1.proftext -o %t
+RUN: llvm-profdata show %t -all-functions -counts | FileCheck %s --check-prefix=DISJOINT
+DISJOINT: foo:
+DISJOINT: Counters: 3
+DISJOINT: Function count: 1
+DISJOINT: Block counts: [2, 3]
+DISJOINT: bar:
+DISJOINT: Counters: 3
+DISJOINT: Function count: 1
+DISJOINT: Block counts: [2, 3]
+DISJOINT: Total functions: 2
+DISJOINT: Maximum function count: 1
+DISJOINT: Maximum internal block count: 3