add testcase for 128-bit add/sub

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37170 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/Generic/i128-addsub.ll b/test/CodeGen/Generic/i128-addsub.ll
new file mode 100644 (file)
index 0000000..10f0acc
--- /dev/null
+++ b/test/CodeGen/Generic/i128-addsub.ll
@@ -0,0 +1,39 @@
+; RUN: llvm-as < %s | llc
+
+define void @test_add(i64 %AL, i64 %AH, i64 %BL, i64 %BH, i64* %RL, i64* %RH) {
+entry:
+       %tmp1 = zext i64 %AL to i128            ; <i128> [#uses=1]
+       %tmp23 = zext i64 %AH to i128           ; <i128> [#uses=1]
+       %tmp4 = shl i128 %tmp23, 64             ; <i128> [#uses=1]
+       %tmp5 = or i128 %tmp4, %tmp1            ; <i128> [#uses=1]
+       %tmp67 = zext i64 %BL to i128           ; <i128> [#uses=1]
+       %tmp89 = zext i64 %BH to i128           ; <i128> [#uses=1]
+       %tmp11 = shl i128 %tmp89, 64            ; <i128> [#uses=1]
+       %tmp12 = or i128 %tmp11, %tmp67         ; <i128> [#uses=1]
+       %tmp15 = add i128 %tmp12, %tmp5         ; <i128> [#uses=2]
+       %tmp1617 = trunc i128 %tmp15 to i64             ; <i64> [#uses=1]
+       store i64 %tmp1617, i64* %RL
+       %tmp21 = lshr i128 %tmp15, 64           ; <i128> [#uses=1]
+       %tmp2122 = trunc i128 %tmp21 to i64             ; <i64> [#uses=1]
+       store i64 %tmp2122, i64* %RH
+       ret void
+}
+
+define void @test_sub(i64 %AL, i64 %AH, i64 %BL, i64 %BH, i64* %RL, i64* %RH) {
+entry:
+       %tmp1 = zext i64 %AL to i128            ; <i128> [#uses=1]
+       %tmp23 = zext i64 %AH to i128           ; <i128> [#uses=1]
+       %tmp4 = shl i128 %tmp23, 64             ; <i128> [#uses=1]
+       %tmp5 = or i128 %tmp4, %tmp1            ; <i128> [#uses=1]
+       %tmp67 = zext i64 %BL to i128           ; <i128> [#uses=1]
+       %tmp89 = zext i64 %BH to i128           ; <i128> [#uses=1]
+       %tmp11 = shl i128 %tmp89, 64            ; <i128> [#uses=1]
+       %tmp12 = or i128 %tmp11, %tmp67         ; <i128> [#uses=1]
+       %tmp15 = sub i128 %tmp5, %tmp12         ; <i128> [#uses=2]
+       %tmp1617 = trunc i128 %tmp15 to i64             ; <i64> [#uses=1]
+       store i64 %tmp1617, i64* %RL
+       %tmp21 = lshr i128 %tmp15, 64           ; <i128> [#uses=1]
+       %tmp2122 = trunc i128 %tmp21 to i64             ; <i64> [#uses=1]
+       store i64 %tmp2122, i64* %RH
+       ret void
+}