Imported Upstream version 5.18.0.205

Former-commit-id: 7f59f7e792705db773f1caecdaa823092f4e2927

external/llvm/test/Transforms/DeadArgElim/2013-05-17-VarargsAndBlockAddress.ll

@@ -0,0 +1,25 @@
+; RUN: opt %s -deadargelim -S | FileCheck %s
+
+
+@block_addr = global i8* blockaddress(@varargs_func, %l1)
+; CHECK: @block_addr = global i8* blockaddress(@varargs_func, %l1)
+
+
+; This function is referenced by a "blockaddress" constant but it is
+; not address-taken, so the pass should be able to remove its unused
+; varargs.
+
+define internal i32 @varargs_func(i8* %addr, ...) {
+  indirectbr i8* %addr, [ label %l1, label %l2 ]
+l1:
+  ret i32 1
+l2:
+  ret i32 2
+}
+; CHECK: define internal i32 @varargs_func(i8* %addr) {
+
+define i32 @caller(i8* %addr) {
+  %r = call i32 (i8*, ...) @varargs_func(i8* %addr)
+  ret i32 %r
+}
+; CHECK: %r = call i32 @varargs_func(i8* %addr)