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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/gcc.target/i386/asm-2.c
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Diffstat (limited to 'gcc/testsuite/gcc.target/i386/asm-2.c')
-rw-r--r--gcc/testsuite/gcc.target/i386/asm-2.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/i386/asm-2.c b/gcc/testsuite/gcc.target/i386/asm-2.c
new file mode 100644
index 000000000..09a545517
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/asm-2.c
@@ -0,0 +1,62 @@
+/* PR opt/13862 */
+/* { dg-do compile } */
+/* { dg-require-effective-target ilp32 } */
+/* { dg-options "-O" } */
+
+typedef struct _fame_syntax_t_ {
+} fame_syntax_t;
+
+typedef struct _fame_bitbuffer_t_
+{
+ unsigned char * base;
+ unsigned char * data;
+ unsigned long shift;
+} fame_bitbuffer_t;
+
+#define fast_bitbuffer_write(data, shift, c, l) \
+{ \
+ int d; \
+ \
+ asm("add %1, %%ecx\n" /* ecx = shift + length */ \
+ "shrd %%cl, %2, %3\n" /* adjust code to fit in */ \
+ "shr %%cl, %2\n" /* adjust code to fit in */ \
+ "mov %%ecx, %1\n" /* shift += length */ \
+ "bswap %2\n" /* reverse byte order of code */ \
+ "shr $5, %%ecx\n" /* get dword increment */ \
+ "or %2, (%0)\n" /* put first 32 bits */ \
+ "bswap %3\n" /* reverse byte order of code */ \
+ "lea (%0, %%ecx, 4), %0\n" /* data += (ecx>32) */ \
+ "andl $31, %1\n" /* mask shift */ \
+ "orl %3, (%0)\n" /* put last 32 bits */ \
+ : "=r"(data), "=r"(shift), "=a"(d), "=d"(d), "=c"(d) \
+ : "0"(data), "1"(shift), "2"((unsigned long) c), "3"(0), \
+ "c"((unsigned long) l) \
+ : "memory"); \
+}
+
+#define bitbuffer_write(bb, c, l) \
+ fast_bitbuffer_write((bb)->data, (bb)->shift, c, l)
+
+typedef enum { frame_type_I, frame_type_P } frame_type_t;
+
+typedef struct _fame_syntax_mpeg1_t_ {
+ fame_bitbuffer_t buffer;
+ frame_type_t frame_type;
+} fame_syntax_mpeg1_t;
+
+#define FAME_SYNTAX_MPEG1(x) ((fame_syntax_mpeg1_t *) x)
+
+void mpeg1_start_picture(fame_syntax_t *syntax)
+{
+ fame_syntax_mpeg1_t *syntax_mpeg1 = FAME_SYNTAX_MPEG1(syntax);
+ bitbuffer_write(&syntax_mpeg1->buffer, 0xFFFF, 16);
+
+ switch(syntax_mpeg1->frame_type) {
+ case frame_type_I:
+ bitbuffer_write(&syntax_mpeg1->buffer, 0, 1);
+ break;
+ case frame_type_P:
+ bitbuffer_write(&syntax_mpeg1->buffer, 0, 1);
+ break;
+ }
+}