1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
From 19444be5c75a1e7bcc7f2490a3503947d4904b64 Mon Sep 17 00:00:00 2001
From: uros <uros@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Sun, 22 May 2011 19:14:50 +0000
Subject: [PATCH] PR target/49104
* config/i386/cpuid.h (bit_MMXEXT): New define.
libcpp/ChangeLog:
2011-05-22 Uros Bizjak <ubizjak@gmail.com>
PR target/49104
* lex.c (init_vectorized_lexer): Do not set "minimum" when __3dNOW_A__
is defined. Check bit_MMXEXT and bit_CMOV to use search_line_mmx.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@174038 138bc75d-0d04-0410-961f-82ee72b054a4
index e9d0fab..3c3f47b 100644
--- a/gcc/config/i386/cpuid.h
+++ b/gcc/config/i386/cpuid.h
@@ -57,6 +57,7 @@
#define bit_TBM (1 << 21)
/* %edx */
+#define bit_MMXEXT (1 << 22)
#define bit_LM (1 << 29)
#define bit_3DNOWP (1 << 30)
#define bit_3DNOW (1 << 31)
index 3bf4886..6c3be71 100644
--- a/libcpp/lex.c
+++ b/libcpp/lex.c
@@ -294,7 +294,7 @@ static const char repl_chars[4][16] __attribute__((aligned(16))) = {
/* A version of the fast scanner using MMX vectorized byte compare insns.
This uses the PMOVMSKB instruction which was introduced with "MMX2",
- which was packaged into SSE1; it is also present in the AMD 3dNOW-A
+ which was packaged into SSE1; it is also present in the AMD MMX
extension. Mark the function as using "sse" so that we emit a real
"emms" instruction, rather than the 3dNOW "femms" instruction. */
@@ -488,7 +488,7 @@ init_vectorized_lexer (void)
minimum = 3;
#elif defined(__SSE2__)
minimum = 2;
-#elif defined(__SSE__) || defined(__3dNOW_A__)
+#elif defined(__SSE__)
minimum = 1;
#endif
@@ -505,7 +505,8 @@ init_vectorized_lexer (void)
}
else if (__get_cpuid (0x80000001, &dummy, &dummy, &dummy, &edx))
{
- if (minimum == 1 || edx & bit_3DNOWP)
+ if (minimum == 1
+ || (edx & (bit_MMXEXT | bit_CMOV)) == (bit_MMXEXT | bit_CMOV))
impl = search_line_mmx;
}
--
1.7.0.4
|
