From: Chris Lattner <sabre@nondot.org>
Date: Mon, 10 Jul 2006 20:53:53 +0000 (+0000)
Subject: New testcase for folding bswaps into i16/i32 loads and stores.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=5895a13755cd61c1aead93d68402389dfa8f7b8a;p=oota-llvm.git

New testcase for folding bswaps into i16/i32 loads and stores.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29088 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/test/CodeGen/PowerPC/bswap-load-store.ll b/test/CodeGen/PowerPC/bswap-load-store.ll
new file mode 100644
index 00000000000..b8668bb6f02
--- /dev/null
+++ b/test/CodeGen/PowerPC/bswap-load-store.ll
@@ -0,0 +1,42 @@
+; RUN: llvm-as < %s | llc -march=ppc32 | grep 'stwbrx\|lwbrx\|sthbrx\|lhbrx' | wc -l | grep 4 &&
+; RUN: llvm-as < %s | llc -march=ppc32 | not grep rlwinm &&
+; RUN: llvm-as < %s | llc -march=ppc32 | not grep rlwimi &&
+; RUN: llvm-as < %s | llc -march=ppc64 | grep 'stwbrx\|lwbrx\|sthbrx\|lhbrx' | wc -l | grep 4 &&
+; RUN: llvm-as < %s | llc -march=ppc64 | not grep rlwinm &&
+; RUN: llvm-as < %s | llc -march=ppc64 | not grep rlwimi
+
+void %STWBRX(uint %i, sbyte* %ptr, int %off) {
+	%tmp1 = getelementptr sbyte* %ptr, int %off
+	%tmp1 = cast sbyte* %tmp1 to uint*
+	%tmp13 = tail call uint %llvm.bswap.i32(uint %i)
+	store uint %tmp13, uint* %tmp1
+	ret void
+}
+
+uint %LWBRX(sbyte* %ptr, int %off) {
+	%tmp1 = getelementptr sbyte* %ptr, int %off
+	%tmp1 = cast sbyte* %tmp1 to uint*		
+	%tmp = load uint* %tmp1		
+	%tmp14 = tail call uint %llvm.bswap.i32( uint %tmp )
+	ret uint %tmp14
+}
+
+void %STHBRX(ushort %s, sbyte* %ptr, int %off) {
+	%tmp1 = getelementptr sbyte* %ptr, int %off
+	%tmp1 = cast sbyte* %tmp1 to ushort*
+	%tmp5 = call ushort %llvm.bswap.i16( ushort %s )
+	store ushort %tmp5, ushort* %tmp1
+	ret void
+}
+
+ushort %LHBRX(sbyte* %ptr, int %off) {
+	%tmp1 = getelementptr sbyte* %ptr, int %off
+	%tmp1 = cast sbyte* %tmp1 to ushort*
+	%tmp = load ushort* %tmp1
+	%tmp6 = call ushort %llvm.bswap.i16(ushort %tmp)
+	ret ushort %tmp6
+}
+
+declare uint %llvm.bswap.i32(uint)
+
+declare ushort %llvm.bswap.i16(ushort)