r200231 - XCore target exception handling

[Robert Lytton]

Author: rlytton
Date: Mon Jan 27 11:56:25 2014
New Revision: 200231

URL: http://llvm.org/viewvc/llvm-project?rev=200231&view=rev
Log:
XCore target exception handling

Implement __builtin_eh_return_data_regno()

Modified:
    cfe/trunk/lib/Basic/Targets.cpp
    cfe/trunk/test/CodeGen/xcore-abi.c

Modified: cfe/trunk/lib/Basic/Targets.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Basic/Targets.cpp?rev=200231&r1=200230&r2=200231&view=diff
==============================================================================
--- cfe/trunk/lib/Basic/Targets.cpp (original)
+++ cfe/trunk/lib/Basic/Targets.cpp Mon Jan 27 11:56:25 2014
@@ -5514,6 +5514,10 @@ public:
                                      TargetInfo::ConstraintInfo &Info) const {
     return false;
   }
+  virtual int getEHDataRegisterNumber(unsigned RegNo) const {
+    // R0=ExceptionPointerRegister R1=ExceptionSelectorRegister
+    return (RegNo < 2)? RegNo : -1;
+  }
 };
 
 const Builtin::Info XCoreTargetInfo::BuiltinInfo[] = {

Modified: cfe/trunk/test/CodeGen/xcore-abi.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/xcore-abi.c?rev=200231&r1=200230&r2=200231&view=diff
==============================================================================
--- cfe/trunk/test/CodeGen/xcore-abi.c (original)
+++ cfe/trunk/test/CodeGen/xcore-abi.c Mon Jan 27 11:56:25 2014
@@ -1,3 +1,4 @@
+// REQUIRES: xcore-registered-target
 // RUN: %clang_cc1 -triple xcore -verify %s
 _Static_assert(sizeof(long long) == 8, "sizeof long long is wrong");
 _Static_assert(_Alignof(long long) == 4, "alignof long long is wrong");
@@ -112,10 +113,18 @@ void testbuiltin (void) {
   // CHECK: call i32 @llvm.xcore.getps(i32 {{%[a-z0-9]+}})
   // CHECK: call i32 @llvm.xcore.bitrev(i32 {{%[a-z0-9]+}})
   // CHECK: call void @llvm.xcore.setps(i32 {{%[a-z0-9]+}}, i32 {{%[a-z0-9]+}})
-  int i = __builtin_getid();
-  unsigned int ui = __builtin_getps(i);
+  volatile int i = __builtin_getid();
+  volatile unsigned int ui = __builtin_getps(i);
   ui = __builtin_bitrev(ui);
   __builtin_setps(i,ui);
+
+  // CHECK: store volatile i32 0, i32* {{%[a-z0-9]+}}, align 4
+  // CHECK: store volatile i32 1, i32* {{%[a-z0-9]+}}, align 4
+  // CHECK: store volatile i32 -1, i32* {{%[a-z0-9]+}}, align 4
+  volatile int res;
+  res = __builtin_eh_return_data_regno(0);
+  res = __builtin_eh_return_data_regno(1);
+  res = __builtin_eh_return_data_regno(2);
 }
 
 // CHECK-LABEL: define zeroext i8 @testchar()