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authorStephen Hines <srhines@google.com>2014-12-01 14:51:49 -0800
committerStephen Hines <srhines@google.com>2014-12-02 16:08:10 -0800
commit37ed9c199ca639565f6ce88105f9e39e898d82d0 (patch)
tree8fb36d3910e3ee4c4e1b7422f4f017108efc52f5 /test/CodeGen/ARM/tail-call.ll
parentd2327b22152ced7bc46dc629fc908959e8a52d03 (diff)
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Update aosp/master LLVM for rebase to r222494.
Change-Id: Ic787f5e0124df789bd26f3f24680f45e678eef2d
Diffstat (limited to 'test/CodeGen/ARM/tail-call.ll')
-rw-r--r--test/CodeGen/ARM/tail-call.ll10
1 files changed, 10 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/tail-call.ll b/test/CodeGen/ARM/tail-call.ll
index 771158632e..c3e79652c0 100644
--- a/test/CodeGen/ARM/tail-call.ll
+++ b/test/CodeGen/ARM/tail-call.ll
@@ -3,6 +3,7 @@
; RUN: | FileCheck %s -check-prefix CHECK-NO-TAIL
declare i32 @callee(i32 %i)
+declare extern_weak fastcc void @callee_weak()
define i32 @caller(i32 %i) {
entry:
@@ -19,3 +20,12 @@ entry:
; CHECK-NO-TAIL: pop {lr}
; CHECK-NO-TAIL: bx lr
+
+; Weakly-referenced extern functions cannot be tail-called, as AAELF does
+; not define the behaviour of branch instructions to undefined weak symbols.
+define fastcc void @caller_weak() {
+; CHECK-LABEL: caller_weak:
+; CHECK: bl callee_weak
+ tail call void @callee_weak()
+ ret void
+}