Fix sdisel memcpy, memset, memmove lowering:

1. Makes it possible to lower with floating point loads and stores.
2. Avoid unaligned loads / stores unless it's fast.
3. Fix some memcpy lowering logic bug related to when to optimize a
   load from constant string into a constant.
4. Adjust x86 memcpy lowering threshold to make it more sane.
5. Fix x86 target hook so it uses vector and floating point memory
   ops more effectively.
rdar://7774704


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100090 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 40 deletions

diff --git a/test/CodeGen/X86/memset-2.ll b/test/CodeGen/X86/memset-2.ll
index 7deb52f807..e2eba76da8 100644
--- a/test/CodeGen/X86/memset-2.ll
+++ b/test/CodeGen/X86/memset-2.ll
@@ -1,47 +1,13 @@
-; RUN: llc < %s | not grep rep
-; RUN: llc < %s | grep memset
+; RUN: llc < %s | FileCheck %s
 
 target triple = "i386"
 
 declare void @llvm.memset.i32(i8*, i8, i32, i32) nounwind
 
-define fastcc i32 @cli_scanzip(i32 %desc) nounwind {
+define fastcc void @t() nounwind {
 entry:
-	br label %bb8.i.i.i.i
-
-bb8.i.i.i.i:		; preds = %bb8.i.i.i.i, %entry
-	icmp eq i32 0, 0		; <i1>:0 [#uses=1]
-	br i1 %0, label %bb61.i.i.i, label %bb8.i.i.i.i
-
-bb32.i.i.i:		; preds = %bb61.i.i.i
-	ptrtoint i8* %tail.0.i.i.i to i32		; <i32>:1 [#uses=1]
-	sub i32 0, %1		; <i32>:2 [#uses=1]
-	icmp sgt i32 %2, 19		; <i1>:3 [#uses=1]
-	br i1 %3, label %bb34.i.i.i, label %bb61.i.i.i
-
-bb34.i.i.i:		; preds = %bb32.i.i.i
-	load i32* null, align 4		; <i32>:4 [#uses=1]
-	icmp eq i32 %4, 101010256		; <i1>:5 [#uses=1]
-	br i1 %5, label %bb8.i11.i.i.i, label %bb61.i.i.i
-
-bb8.i11.i.i.i:		; preds = %bb8.i11.i.i.i, %bb34.i.i.i
-	icmp eq i32 0, 0		; <i1>:6 [#uses=1]
-	br i1 %6, label %cli_dbgmsg.exit49.i, label %bb8.i11.i.i.i
-
-cli_dbgmsg.exit49.i:		; preds = %bb8.i11.i.i.i
-	icmp eq [32768 x i8]* null, null		; <i1>:7 [#uses=1]
-	br i1 %7, label %bb1.i28.i, label %bb8.i.i
-
-bb61.i.i.i:		; preds = %bb61.i.i.i, %bb34.i.i.i, %bb32.i.i.i, %bb8.i.i.i.i
-	%tail.0.i.i.i = getelementptr [1024 x i8]* null, i32 0, i32 0		; <i8*> [#uses=2]
-	load i8* %tail.0.i.i.i, align 1		; <i8>:8 [#uses=1]
-	icmp eq i8 %8, 80		; <i1>:9 [#uses=1]
-	br i1 %9, label %bb32.i.i.i, label %bb61.i.i.i
-
-bb1.i28.i:		; preds = %cli_dbgmsg.exit49.i
-	call void @llvm.memset.i32( i8* null, i8 0, i32 88, i32 1 ) nounwind
-	unreachable
-
-bb8.i.i:		; preds = %bb8.i.i, %cli_dbgmsg.exit49.i
-	br label %bb8.i.i
+; CHECK: t:
+; CHECK: call memset
+  call void @llvm.memset.i32( i8* null, i8 0, i32 188, i32 1 ) nounwind
+  unreachable
 }