From: Chris Lattner <sabre@nondot.org>
Date: Fri, 24 Sep 2004 15:18:43 +0000 (+0000)
Subject: Add some tests for shr-and folding
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=71dd80105531c7d1df9719be03abd0e55f7e98b4;p=oota-llvm.git

Add some tests for shr-and folding


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16507 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/test/Transforms/InstCombine/and.ll b/test/Transforms/InstCombine/and.ll
index 703dea3326c..ba30d816df1 100644
--- a/test/Transforms/InstCombine/and.ll
+++ b/test/Transforms/InstCombine/and.ll
@@ -119,3 +119,20 @@ bool %test18(int %A) {
 	ret bool %C
 }
 
+int %test19(int %A) {
+	%B = shl int %A, ubyte 3
+	%C = and int %B, -2    ;; Clearing a zero bit
+	ret int %C
+}
+
+ubyte %test20(ubyte %A) {
+	%C = shr ubyte %A, ubyte 7 
+	%D = and ubyte %C, 1            ;; Unneeded
+	ret ubyte %D
+}
+
+sbyte %test21(sbyte %A) {
+	%C = shr sbyte %A, ubyte 7   ;; sign extend
+	%D = and sbyte %C, 1         ;; chop off sign
+	ret sbyte %D
+}