From a523293cd962aa6eaf71e62b9a945aec81d05595 Mon Sep 17 00:00:00 2001
From: James Molloy <james.molloy@arm.com>
Date: Tue, 14 Jun 2016 13:33:07 +0000
Subject: [Thumb] Fix off-by-one error in r272007

We can only generate immediates up to #510 with a MOV+ADD, not #511, because there's no such instruction as add #256.

Found by Oliver Stannard and csmith!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272665 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/CodeGen/Thumb/constants.ll | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'test/CodeGen/Thumb')

diff --git a/test/CodeGen/Thumb/constants.ll b/test/CodeGen/Thumb/constants.ll
index 34c08139602..b1145d7b1d8 100644
--- a/test/CodeGen/Thumb/constants.ll
+++ b/test/CodeGen/Thumb/constants.ll
@@ -9,3 +9,11 @@
 define i32 @mov_and_add() {
   ret i32 267
 }
+
+; CHECK-T1-LABEL: @mov_and_add2
+; CHECK-T2-LABEL: @mov_and_add2
+; CHECK-T1: ldr r0,
+; CHECK-T2: movw r0, #511
+define i32 @mov_and_add2() {
+  ret i32 511
+}
-- 
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