Teach MergeFunctions about operand bundles

llvm-svn: 255528

1 files changed, 34 insertions, 0 deletions

diff --git a/llvm/test/Feature/OperandBundles/merge-func.ll b/llvm/test/Feature/OperandBundles/merge-func.ll
new file mode 100644
index 00000000000..aad9262c901
--- /dev/null
+++ b/llvm/test/Feature/OperandBundles/merge-func.ll
@@ -0,0 +1,34 @@
+; RUN: opt -S -mergefunc < %s | FileCheck %s
+
+; Minor note: functions need to be at least three instructions long
+; to be considered by -mergefunc.
+
+declare i32 @foo(...)
+
+define i32 @f() {
+; CHECK-LABEL: @f(
+ entry:
+  %v0 = call i32 (...) @foo(i32 10) [ "foo"(i32 20) ]
+  %v1 = call i32 (...) @foo(i32 10) [ "foo"(i32 20) ]
+  %v2 = call i32 (...) @foo(i32 10) [ "foo"(i32 20) ]
+
+; CHECK:  %v0 = call i32 (...) @foo(i32 10) [ "foo"(i32 20) ]
+; CHECK:  %v1 = call i32 (...) @foo(i32 10) [ "foo"(i32 20) ]
+; CHECK:  %v2 = call i32 (...) @foo(i32 10) [ "foo"(i32 20) ]
+
+  ret i32 %v2
+}
+
+define i32 @g() {
+; CHECK-LABEL: @g(
+ entry:
+  %v0 = call i32 (...) @foo() [ "foo"(i32 10, i32 20) ]
+  %v1 = call i32 (...) @foo() [ "foo"(i32 10, i32 20) ]
+  %v2 = call i32 (...) @foo() [ "foo"(i32 10, i32 20) ]
+
+; CHECK:  %v0 = call i32 (...) @foo() [ "foo"(i32 10, i32 20) ]
+; CHECK:  %v1 = call i32 (...) @foo() [ "foo"(i32 10, i32 20) ]
+; CHECK:  %v2 = call i32 (...) @foo() [ "foo"(i32 10, i32 20) ]
+
+  ret i32 %v2
+}