From 0cbe91ba3bd84a5ef68a1d0de5df6e955690b0a4 Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Wed, 2 Mar 2011 01:34:10 +0000
Subject: Don't re-use existing addrec expansions if they contain casts. This
 fixes PR9259.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126812 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/CodeGen/X86/lsr-quadratic-expand.ll | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 test/CodeGen/X86/lsr-quadratic-expand.ll

(limited to 'test/CodeGen/X86')

diff --git a/test/CodeGen/X86/lsr-quadratic-expand.ll b/test/CodeGen/X86/lsr-quadratic-expand.ll
new file mode 100644
index 0000000..2bbb470
--- /dev/null
+++ b/test/CodeGen/X86/lsr-quadratic-expand.ll
@@ -0,0 +1,22 @@
+; RUN: llc -march=x86-64 < %s
+
+define void @dw2102_i2c_transfer() nounwind {
+entry:
+  br label %bb
+
+bb:                                               ; preds = %bb, %entry
+  %z = phi i64 [ 0, %entry ], [ %z3, %bb ]
+  %z1 = phi i16 [ undef, %entry ], [ %z6, %bb ]
+  %z2 = phi i32 [ 0, %entry ], [ %z8, %bb ]
+  %z3 = add i64 %z, 1
+  %z4 = zext i16 %z1 to i32
+  %z5 = add nsw i32 %z4, %z2
+  %z6 = trunc i32 %z5 to i16
+  call fastcc void @dw210x_op_rw(i16 zeroext %z6)
+  %z7 = getelementptr i8* null, i64 %z
+  store i8 undef, i8* %z7, align 1
+  %z8 = add nsw i32 %z2, 1
+  br label %bb
+}
+
+declare fastcc void @dw210x_op_rw(i16 zeroext) nounwind
-- 
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