From 19e970542d63ae7865b7abefd503575af8034299 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Mon, 2 Apr 2007 22:08:54 +0000
Subject: [PATCH] Add a regtest for cases we now recognize as rotates, thanks
 to Scott Michel's recent dagcombine patch

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35606 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/CodeGen/PowerPC/rotl-2.ll | 38 ++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 test/CodeGen/PowerPC/rotl-2.ll

diff --git a/test/CodeGen/PowerPC/rotl-2.ll b/test/CodeGen/PowerPC/rotl-2.ll
new file mode 100644
index 00000000000..0512357584f
--- /dev/null
+++ b/test/CodeGen/PowerPC/rotl-2.ll
@@ -0,0 +1,38 @@
+; RUN: llvm-as < %s | llc -march=ppc32 | grep rlwinm | wc -l | grep 4 &&
+; RUN: llvm-as < %s | llc -march=ppc32 | grep rlwnm | wc -l | grep 2 &&
+; RUN: llvm-as < %s | llc -march=ppc32 | not grep or
+
+define i32 @rotl32(i32 %A, i8 %Amt) {
+	%shift.upgrd.1 = zext i8 %Amt to i32		; <i32> [#uses=1]
+	%B = shl i32 %A, %shift.upgrd.1		; <i32> [#uses=1]
+	%Amt2 = sub i8 32, %Amt		; <i8> [#uses=1]
+	%shift.upgrd.2 = zext i8 %Amt2 to i32		; <i32> [#uses=1]
+	%C = lshr i32 %A, %shift.upgrd.2		; <i32> [#uses=1]
+	%D = or i32 %B, %C		; <i32> [#uses=1]
+	ret i32 %D
+}
+
+define i32 @rotr32(i32 %A, i8 %Amt) {
+	%shift.upgrd.3 = zext i8 %Amt to i32		; <i32> [#uses=1]
+	%B = lshr i32 %A, %shift.upgrd.3		; <i32> [#uses=1]
+	%Amt2 = sub i8 32, %Amt		; <i8> [#uses=1]
+	%shift.upgrd.4 = zext i8 %Amt2 to i32		; <i32> [#uses=1]
+	%C = shl i32 %A, %shift.upgrd.4		; <i32> [#uses=1]
+	%D = or i32 %B, %C		; <i32> [#uses=1]
+	ret i32 %D
+}
+
+define i32 @rotli32(i32 %A) {
+	%B = shl i32 %A, 5		; <i32> [#uses=1]
+	%C = lshr i32 %A, 27		; <i32> [#uses=1]
+	%D = or i32 %B, %C		; <i32> [#uses=1]
+	ret i32 %D
+}
+
+define i32 @rotri32(i32 %A) {
+	%B = lshr i32 %A, 5		; <i32> [#uses=1]
+	%C = shl i32 %A, 27		; <i32> [#uses=1]
+	%D = or i32 %B, %C		; <i32> [#uses=1]
+	ret i32 %D
+}
+