1 files changed, 57 insertions, 0 deletions
diff --git a/test/CodeGen/Thumb/ldr_ext.ll b/test/CodeGen/Thumb/ldr_ext.ll
new file mode 100644
index 0000000..9a28124
--- /dev/null
+++ b/test/CodeGen/Thumb/ldr_ext.ll
@@ -0,0 +1,57 @@
+; RUN: llc < %s -march=thumb | FileCheck %s -check-prefix=V5
+; RUN: llc < %s -march=thumb -mattr=+v6 | FileCheck %s -check-prefix=V6
+
+; rdar://7176514
+
+define i32 @test1(i8* %t1) nounwind {
+; V5: ldrb
+
+; V6: ldrb
+    %tmp.u = load i8* %t1
+    %tmp1.s = zext i8 %tmp.u to i32
+    ret i32 %tmp1.s
+}
+
+define i32 @test2(i16* %t1) nounwind {
+; V5: ldrh
+
+; V6: ldrh
+    %tmp.u = load i16* %t1
+    %tmp1.s = zext i16 %tmp.u to i32
+    ret i32 %tmp1.s
+}
+
+define i32 @test3(i8* %t0) nounwind {
+; V5: ldrb
+; V5: lsls
+; V5: asrs
+
+; V6: ldrb
+; V6: sxtb
+    %tmp.s = load i8* %t0
+    %tmp1.s = sext i8 %tmp.s to i32
+    ret i32 %tmp1.s
+}
+
+define i32 @test4(i16* %t0) nounwind {
+; V5: ldrh
+; V5: lsls
+; V5: asrs
+
+; V6: ldrh
+; V6: sxth
+    %tmp.s = load i16* %t0
+    %tmp1.s = sext i16 %tmp.s to i32
+    ret i32 %tmp1.s
+}
+
+define i32 @test5() nounwind {
+; V5: movs r0, #0
+; V5: ldrsh
+
+; V6: movs r0, #0
+; V6: ldrsh
+    %tmp.s = load i16* null
+    %tmp1.s = sext i16 %tmp.s to i32
+    ret i32 %tmp1.s
+}