ARMEB: Fix byte order of EH frame unwinding instructions

llvm-svn: 208689

1 files changed, 73 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/ARM/big-endian-eh-unwind.ll b/llvm/test/CodeGen/ARM/big-endian-eh-unwind.ll
new file mode 100644
index 00000000000..b9b9a9d15b4
--- /dev/null
+++ b/llvm/test/CodeGen/ARM/big-endian-eh-unwind.ll
@@ -0,0 +1,73 @@
+; RUN: llc -march armeb -mattr v7 -filetype obj -o - %s | llvm-objdump -s - | FileCheck %s
+
+; ARM EHABI for big endian
+; This test case checks whether frame unwinding instructions are laid out in big endian format.
+; 
+; This is the LLVM assembly generated from following C++ code:
+;
+; extern void foo(int);
+; void test(int a, int b) {
+;   try {
+;   foo(a);
+; } catch (...) {
+;   foo(b);
+; }
+;}
+
+define void @_Z4testii(i32 %a, i32 %b) #0 {
+entry:
+  invoke void @_Z3fooi(i32 %a)
+          to label %try.cont unwind label %lpad
+
+lpad:                                             ; preds = %entry
+  %0 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
+          catch i8* null
+  %1 = extractvalue { i8*, i32 } %0, 0
+  %2 = tail call i8* @__cxa_begin_catch(i8* %1) #2
+  invoke void @_Z3fooi(i32 %b)
+          to label %invoke.cont2 unwind label %lpad1
+
+invoke.cont2:                                     ; preds = %lpad
+  tail call void @__cxa_end_catch()
+  br label %try.cont
+
+try.cont:                                         ; preds = %entry, %invoke.cont2
+  ret void
+
+lpad1:                                            ; preds = %lpad
+  %3 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
+          cleanup
+  invoke void @__cxa_end_catch()
+          to label %eh.resume unwind label %terminate.lpad
+
+eh.resume:                                        ; preds = %lpad1
+  resume { i8*, i32 } %3
+
+terminate.lpad:                                   ; preds = %lpad1
+  %4 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
+          catch i8* null
+  %5 = extractvalue { i8*, i32 } %4, 0
+  tail call void @__clang_call_terminate(i8* %5) #3
+  unreachable
+}
+
+declare void @_Z3fooi(i32) #0
+
+declare i32 @__gxx_personality_v0(...)
+
+declare i8* @__cxa_begin_catch(i8*)
+
+declare void @__cxa_end_catch()
+
+; Function Attrs: noinline noreturn nounwind
+define linkonce_odr hidden void @__clang_call_terminate(i8*) #1 {
+  %2 = tail call i8* @__cxa_begin_catch(i8* %0) #2
+  tail call void @_ZSt9terminatev() #3
+  unreachable
+}
+
+declare void @_ZSt9terminatev()
+
+; CHECK-LABEL: Contents of section .ARM.extab:
+; CHECK-NEXT: 0000 00000000 00b0b0b0
+