From 8c219ecd1a9a4ad851efce74cf382f097b96ca3a Mon Sep 17 00:00:00 2001
From: Andrew Trick <atrick@apple.com>
Date: Wed, 28 Sep 2011 02:13:32 +0000
Subject: [PATCH] Test case for r140670: indvars should hoist sext.

llvm-svn: 140671
---
 .../IndVarSimplify/2011-09-27-hoistsext.ll    | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 llvm/test/Transforms/IndVarSimplify/2011-09-27-hoistsext.ll

diff --git a/llvm/test/Transforms/IndVarSimplify/2011-09-27-hoistsext.ll b/llvm/test/Transforms/IndVarSimplify/2011-09-27-hoistsext.ll
new file mode 100644
index 000000000000..0737489aad5b
--- /dev/null
+++ b/llvm/test/Transforms/IndVarSimplify/2011-09-27-hoistsext.ll
@@ -0,0 +1,28 @@
+; RUN: opt < %s -indvars -S | FileCheck %s
+; Test indvars' ability to hoist new sext created by WidenIV.
+; From ffbench.
+
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
+define internal double @fourn(double* %data, i32 %x, i32 %y, i32 %n) nounwind {
+; CHECK: entry:
+; CHECK: sext
+; CHECK: sext
+entry:
+  br label %for.body
+
+; CHECK: for.body:
+; CHECK-NOT: sext
+; CHECK: br
+for.body:
+  %i2.115 = phi i32 [ 0, %entry ], [ %add249, %for.body ]
+  %add174 = add nsw i32 %i2.115, %x
+  %idxprom177 = sext i32 %add174 to i64
+  %arrayidx179 = getelementptr inbounds double* %data, i64 %idxprom177
+  %tmp180 = load double* %arrayidx179, align 8
+  %add249 = add nsw i32 %i2.115, %y
+  %cmp168 = icmp sgt i32 %add249, %n
+  br i1 %cmp168, label %exit, label %for.body
+
+exit:
+  ret double %tmp180
+}