1 files changed, 57 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/intrinsics-overflow.ll b/test/CodeGen/ARM/intrinsics-overflow.ll
new file mode 100644
index 0000000..af3dd9d
--- /dev/null
+++ b/test/CodeGen/ARM/intrinsics-overflow.ll
@@ -0,0 +1,57 @@
+; RUN: llc < %s -mtriple=arm-linux -mcpu=generic | FileCheck %s
+
+define i32 @uadd_overflow(i32 %a, i32 %b) #0 {
+  %sadd = tail call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 %a, i32 %b)
+  %1 = extractvalue { i32, i1 } %sadd, 1
+  %2 = zext i1 %1 to i32
+  ret i32 %2
+
+  ; CHECK-LABEL: uadd_overflow:
+  ; CHECK: add r[[R2:[0-9]+]], r[[R0:[0-9]+]], r[[R1:[0-9]+]]
+  ; CHECK: mov r[[R1]], #1
+  ; CHECK: cmp r[[R2]], r[[R0]]
+  ; CHECK: movhs r[[R1]], #0
+}
+
+
+define i32 @sadd_overflow(i32 %a, i32 %b) #0 {
+  %sadd = tail call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 %a, i32 %b)
+  %1 = extractvalue { i32, i1 } %sadd, 1
+  %2 = zext i1 %1 to i32
+  ret i32 %2
+
+  ; CHECK-LABEL: sadd_overflow:
+  ; CHECK: add r[[R2:[0-9]+]], r[[R0:[0-9]+]], r[[R1:[0-9]+]]
+  ; CHECK: mov r[[R1]], #1
+  ; CHECK: cmp r[[R2]], r[[R0]]
+  ; CHECK: movvc r[[R1]], #0
+}
+
+define i32 @usub_overflow(i32 %a, i32 %b) #0 {
+  %sadd = tail call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %a, i32 %b)
+  %1 = extractvalue { i32, i1 } %sadd, 1
+  %2 = zext i1 %1 to i32
+  ret i32 %2
+
+  ; CHECK-LABEL: usub_overflow:
+  ; CHECK: mov r[[R2]], #1
+  ; CHECK: cmp r[[R0]], r[[R1]]
+  ; CHECK: movhs r[[R2]], #0
+}
+
+define i32 @ssub_overflow(i32 %a, i32 %b) #0 {
+  %sadd = tail call { i32, i1 } @llvm.ssub.with.overflow.i32(i32 %a, i32 %b)
+  %1 = extractvalue { i32, i1 } %sadd, 1
+  %2 = zext i1 %1 to i32
+  ret i32 %2
+
+  ; CHECK-LABEL: ssub_overflow:
+  ; CHECK: mov r[[R2]], #1
+  ; CHECK: cmp r[[R0]], r[[R1]]
+  ; CHECK: movvc r[[R2]], #0
+}
+
+declare { i32, i1 } @llvm.uadd.with.overflow.i32(i32, i32) #1
+declare { i32, i1 } @llvm.sadd.with.overflow.i32(i32, i32) #2
+declare { i32, i1 } @llvm.usub.with.overflow.i32(i32, i32) #3
+declare { i32, i1 } @llvm.ssub.with.overflow.i32(i32, i32) #4