Thumb2 pre/post indexed loads.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74696 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 31 insertions, 0 deletions

diff --git a/test/CodeGen/Thumb2/thumb2-ldr_post.ll b/test/CodeGen/Thumb2/thumb2-ldr_post.ll
new file mode 100644
index 0000000..79ffa82
--- /dev/null
+++ b/test/CodeGen/Thumb2/thumb2-ldr_post.ll
@@ -0,0 +1,12 @@
+; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | \
+; RUN:   grep {ldr.*\\\[.*\],} | count 1
+
+define i32 @test(i32 %a, i32 %b, i32 %c) {
+        %tmp1 = mul i32 %a, %b          ; <i32> [#uses=2]
+        %tmp2 = inttoptr i32 %tmp1 to i32*              ; <i32*> [#uses=1]
+        %tmp3 = load i32* %tmp2         ; <i32> [#uses=1]
+        %tmp4 = sub i32 %tmp1, 8               ; <i32> [#uses=1]
+        %tmp5 = mul i32 %tmp4, %tmp3            ; <i32> [#uses=1]
+        ret i32 %tmp5
+}
+
diff --git a/test/CodeGen/Thumb2/thumb2-ldr_pre.ll b/test/CodeGen/Thumb2/thumb2-ldr_pre.ll
new file mode 100644
index 0000000..7738fd7
--- /dev/null
+++ b/test/CodeGen/Thumb2/thumb2-ldr_pre.ll
@@ -0,0 +1,19 @@
+; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | \
+; RUN:   grep {ldr.*\\!} | count 2
+
+define i32* @test1(i32* %X, i32* %dest) {
+        %Y = getelementptr i32* %X, i32 4               ; <i32*> [#uses=2]
+        %A = load i32* %Y               ; <i32> [#uses=1]
+        store i32 %A, i32* %dest
+        ret i32* %Y
+}
+
+define i32 @test2(i32 %a, i32 %b) {
+        %tmp1 = sub i32 %a, 64          ; <i32> [#uses=2]
+        %tmp2 = inttoptr i32 %tmp1 to i32*              ; <i32*> [#uses=1]
+        %tmp3 = load i32* %tmp2         ; <i32> [#uses=1]
+        %tmp4 = sub i32 %tmp1, %b               ; <i32> [#uses=1]
+        %tmp5 = add i32 %tmp4, %tmp3            ; <i32> [#uses=1]
+        ret i32 %tmp5
+}
+