ISD::ADDE / ISD::SUBE updates the carry bit so they should isle to ADCS and SBCS...

[oota-llvm.git] / test / CodeGen / Thumb2 / carry.ll

diff --git a/test/CodeGen/Thumb2/carry.ll b/test/CodeGen/Thumb2/carry.ll
new file mode 100644 (file)
index 0000000..aa551c7
--- /dev/null
+++ b/test/CodeGen/Thumb2/carry.ll
@@ -0,0 +1,16 @@
+; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | grep "subs r" | count 2
+; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | grep adc
+; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | grep sbc
+
+define i64 @f1(i64 %a, i64 %b) {
+entry:
+       %tmp = sub i64 %a, %b
+       ret i64 %tmp
+}
+
+define i64 @f2(i64 %a, i64 %b) {
+entry:
+        %tmp1 = shl i64 %a, 1
+       %tmp2 = sub i64 %tmp1, %b
+       ret i64 %tmp2
+}