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Diffstat (limited to 'test/CodeGen/ARM/tail-call.ll')
| -rw-r--r-- | test/CodeGen/ARM/tail-call.ll | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/tail-call.ll b/test/CodeGen/ARM/tail-call.ll index 7711586..c3e7965 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 +} |