1 files changed, 0 insertions, 71 deletions
diff --git a/contrib/llvm/lib/Target/X86/README-MMX.txt b/contrib/llvm/lib/Target/X86/README-MMX.txt
deleted file mode 100644
index a6c8616..0000000
--- a/contrib/llvm/lib/Target/X86/README-MMX.txt
+++ /dev/null
@@ -1,71 +0,0 @@
-//===---------------------------------------------------------------------===//
-// Random ideas for the X86 backend: MMX-specific stuff.
-//===---------------------------------------------------------------------===//
-
-//===---------------------------------------------------------------------===//
-
-This:
-
-#include <mmintrin.h>
-
-__v2si qux(int A) {
-  return (__v2si){ 0, A };
-}
-
-is compiled into:
-
-_qux:
-        subl $28, %esp
-        movl 32(%esp), %eax
-        movd %eax, %mm0
-        movq %mm0, (%esp)
-        movl (%esp), %eax
-        movl %eax, 20(%esp)
-        movq %mm0, 8(%esp)
-        movl 12(%esp), %eax
-        movl %eax, 16(%esp)
-        movq 16(%esp), %mm0
-        addl $28, %esp
-        ret
-
-Yuck!
-
-GCC gives us:
-
-_qux:
-        subl    $12, %esp
-        movl    16(%esp), %eax
-        movl    20(%esp), %edx
-        movl    $0, (%eax)
-        movl    %edx, 4(%eax)
-        addl    $12, %esp
-        ret     $4
-
-//===---------------------------------------------------------------------===//
-
-We generate crappy code for this:
-
-__m64 t() {
-  return _mm_cvtsi32_si64(1);
-}
-
-_t:
-	subl	$12, %esp
-	movl	$1, %eax
-	movd	%eax, %mm0
-	movq	%mm0, (%esp)
-	movl	(%esp), %eax
-	movl	4(%esp), %edx
-	addl	$12, %esp
-	ret
-
-The extra stack traffic is covered in the previous entry. But the other reason
-is we are not smart about materializing constants in MMX registers. With -m64
-
-	movl	$1, %eax
-	movd	%eax, %mm0
-	movd	%mm0, %rax
-	ret
-
-We should be using a constantpool load instead:
-	movq	LC0(%rip), %rax