Updates.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30245 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 38 deletions

diff --git a/lib/Target/X86/README.txt b/lib/Target/X86/README.txt
index 94c8ea1..fdfc9fb 100644
--- a/lib/Target/X86/README.txt
+++ b/lib/Target/X86/README.txt
@@ -390,44 +390,6 @@ require a copy to be inserted (in X86InstrInfo::convertToThreeAddress).
 
 //===---------------------------------------------------------------------===//
 
-This code generates ugly code, probably due to costs being off or something:
-
-void %test(float* %P, <4 x float>* %P2 ) {
-        %xFloat0.688 = load float* %P
-        %loadVector37.712 = load <4 x float>* %P2
-        %inFloat3.713 = insertelement <4 x float> %loadVector37.712, float 0.000000e+00, uint 3
-        store <4 x float> %inFloat3.713, <4 x float>* %P2
-        ret void
-}
-
-Generates:
-
-_test:
-        pxor %xmm0, %xmm0
-        movd %xmm0, %eax        ;; EAX = 0!
-        movl 8(%esp), %ecx
-        movaps (%ecx), %xmm0
-        pinsrw $6, %eax, %xmm0
-        shrl $16, %eax          ;; EAX = 0 again!
-        pinsrw $7, %eax, %xmm0
-        movaps %xmm0, (%ecx)
-        ret
-
-It would be better to generate:
-
-_test:
-        movl 8(%esp), %ecx
-        movaps (%ecx), %xmm0
-	xor %eax, %eax
-        pinsrw $6, %eax, %xmm0
-        pinsrw $7, %eax, %xmm0
-        movaps %xmm0, (%ecx)
-        ret
-
-or use pxor (to make a zero vector) and shuffle (to insert it).
-
-//===---------------------------------------------------------------------===//
-
 Bad codegen:
 
 char foo(int x) { return x; }