[fast-isel] Address Eli's comments for r152847. Specifically, add a test case
and still allow immediate encoding, just not with cmn.
rdar://11038907
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152869 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/ARM/fast-isel-cmp-imm.ll b/test/CodeGen/ARM/fast-isel-cmp-imm.ll
index 1693066..660156a 100644
--- a/test/CodeGen/ARM/fast-isel-cmp-imm.ll
+++ b/test/CodeGen/ARM/fast-isel-cmp-imm.ll
@@ -229,3 +229,22 @@
if.end: ; preds = %if.then, %entry
ret void
}
+
+; rdar://11038907
+; When comparing LONG_MIN/INT_MIN use a cmp instruction.
+define void @t13() nounwind ssp {
+entry:
+; ARM: t13
+; THUMB: t13
+ %cmp = icmp slt i32 -123, -2147483648
+; ARM: cmp r{{[0-9]}}, #-2147483648
+; THUMB: cmp.w r{{[0-9]}}, #-2147483648
+ br i1 %cmp, label %if.then, label %if.end
+
+if.then: ; preds = %entry
+ ret void
+
+if.end: ; preds = %entry
+ ret void
+}
+