1 files changed, 52 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/ARM/wide-compares.ll b/llvm/test/CodeGen/ARM/wide-compares.ll
new file mode 100644
index 00000000000..08e07ef76ad
--- /dev/null
+++ b/llvm/test/CodeGen/ARM/wide-compares.ll
@@ -0,0 +1,52 @@
+; RUN: llc -mtriple=armv7-unknown-linux < %s | FileCheck --check-prefix=CHECK --check-prefix=CHECK-ARM %s
+; RUN: llc -mtriple=thumbv6-unknown-linux < %s | FileCheck --check-prefix=CHECK-THUMB1 %s
+; RUN: llc -mtriple=thumbv7-unknown-linux < %s | FileCheck --check-prefix=CHECK --check-prefix=CHECK-THUMB2 %s
+
+; CHECK-THUMB1-NOT: sbc
+
+; CHECK-LABEL: test_slt1:
+define i32 @test_slt1(i64 %a, i64 %b) {
+entry:
+  ; CHECK-ARM: subs {{[^,]+}}, r0, r2
+  ; CHECK-ARM: mov [[TMP:[0-9a-z]+]], #2
+  ; CHECK-ARM: sbcs {{[^,]+}}, r1, r3
+  ; CHECK-ARM: movwlt [[TMP]], #1
+  ; CHECK-ARM: mov r0, [[TMP]]
+  ; CHECK-ARM: bx lr
+  ; CHECK-THUMB2: subs {{[^,]+}}, r0, r2
+  ; CHECK-THUMB2: mov.w [[TMP:[0-9a-z]+]], #2
+  ; CHECK-THUMB2: sbcs.w {{[^,]+}}, r1, r3
+  ; CHECK-THUMB2: it lt
+  ; CHECK-THUMB2: movlt.w [[TMP]], #1
+  ; CHECK-THUMB2: mov r0, [[TMP]]
+  ; CHECK-THUMB2: bx lr
+  %cmp = icmp slt i64 %a, %b
+  br i1 %cmp, label %bb1, label %bb2
+bb1:
+  ret i32 1
+bb2:
+  ret i32 2
+}
+
+; CHECK-LABEL: test_slt2:
+define void @test_slt2(i64 %a, i64 %b) {
+entry:
+  %cmp = icmp slt i64 %a, %b
+  ; CHECK-ARM: subs {{[^,]+}}, r0, r2
+  ; CHECK-ARM: sbcs {{[^,]+}}, r1, r3
+  ; CHECK-THUMB2: subs {{[^,]+}}, r0, r2
+  ; CHECK-THUMB2: sbcs.w {{[^,]+}}, r1, r3
+  ; CHECK: bge [[BB2:\.[0-9A-Za-z_]+]]
+  br i1 %cmp, label %bb1, label %bb2
+bb1:
+  call void @f()
+  ret void
+bb2:
+  ; CHECK: [[BB2]]:
+  ; CHECK-NEXT: bl g
+  call void @g()
+  ret void
+}
+
+declare void @f()
+declare void @g()