From 721c201bd55ffb73cb2ba8d39e0570fa38c44e15 Mon Sep 17 00:00:00 2001
From: dim <dim@FreeBSD.org>
Date: Wed, 15 Aug 2012 19:34:23 +0000
Subject: Vendor import of llvm trunk r161861:
 http://llvm.org/svn/llvm-project/llvm/trunk@161861

---
 test/CodeGen/PowerPC/coalesce-ext.ll | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 test/CodeGen/PowerPC/coalesce-ext.ll

(limited to 'test/CodeGen/PowerPC/coalesce-ext.ll')

diff --git a/test/CodeGen/PowerPC/coalesce-ext.ll b/test/CodeGen/PowerPC/coalesce-ext.ll
new file mode 100644
index 0000000..cc80f83
--- /dev/null
+++ b/test/CodeGen/PowerPC/coalesce-ext.ll
@@ -0,0 +1,17 @@
+; RUN: llc -march=ppc64 -mtriple=powerpc64-apple-darwin < %s | FileCheck %s
+; Check that the peephole optimizer knows about sext and zext instructions.
+; CHECK: test1sext
+define i32 @test1sext(i64 %A, i64 %B, i32* %P, i64 *%P2) nounwind {
+  %C = add i64 %A, %B
+  ; CHECK: add [[SUM:r[0-9]+]], r3, r4
+  %D = trunc i64 %C to i32
+  %E = shl i64 %C, 32
+  %F = ashr i64 %E, 32
+  ; CHECK: extsw [[EXT:r[0-9]+]], [[SUM]]
+  store volatile i64 %F, i64 *%P2
+  ; CHECK: std [[EXT]]
+  store volatile i32 %D, i32* %P
+  ; Reuse low bits of extended register, don't extend live range of SUM.
+  ; CHECK: stw [[EXT]]
+  ret i32 %D
+}
-- 
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