It's not necessary to do rounding for alloca operations when the requested
alignment is equal to the stack alignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/ARM/trunc_ldr.ll b/test/CodeGen/ARM/trunc_ldr.ll
new file mode 100644
index 0000000..bb13ac9
--- /dev/null
+++ b/test/CodeGen/ARM/trunc_ldr.ll
@@ -0,0 +1,24 @@
+; RUN: llvm-as < %s | llc -march=arm | grep ldrb.*7 | wc -l | grep 1
+; RUN: llvm-as < %s | llc -march=arm | grep ldrsb.*7 | wc -l | grep 1
+
+ %struct.A = type { i8, i8, i8, i8, i16, i8, i8, %struct.B** }
+ %struct.B = type { float, float, i32, i32, i32, [0 x i8] }
+
+define i8 @f1(%struct.A* %d) {
+ %tmp2 = getelementptr %struct.A* %d, i32 0, i32 4
+ %tmp23 = bitcast i16* %tmp2 to i32*
+ %tmp4 = load i32* %tmp23
+ %tmp512 = lshr i32 %tmp4, 24
+ %tmp56 = trunc i32 %tmp512 to i8
+ ret i8 %tmp56
+}
+
+define i32 @f2(%struct.A* %d) {
+ %tmp2 = getelementptr %struct.A* %d, i32 0, i32 4
+ %tmp23 = bitcast i16* %tmp2 to i32*
+ %tmp4 = load i32* %tmp23
+ %tmp512 = lshr i32 %tmp4, 24
+ %tmp56 = trunc i32 %tmp512 to i8
+ %tmp57 = sext i8 %tmp56 to i32
+ ret i32 %tmp57
+}