diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/i386/i386-features.c | 3 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/pr98161.c | 48 |
2 files changed, 50 insertions, 1 deletions
diff --git a/gcc/config/i386/i386-features.c b/gcc/config/i386/i386-features.c index ff6676f..c61685b 100644 --- a/gcc/config/i386/i386-features.c +++ b/gcc/config/i386/i386-features.c @@ -1266,9 +1266,10 @@ pseudo_reg_set (rtx_insn *insn) return NULL; /* Check pseudo register push first. */ + machine_mode mode = TARGET_64BIT ? TImode : DImode; if (REG_P (SET_SRC (set)) && !HARD_REGISTER_P (SET_SRC (set)) - && push_operand (SET_DEST (set), GET_MODE (SET_DEST (set)))) + && push_operand (SET_DEST (set), mode)) return set; df_ref ref; diff --git a/gcc/testsuite/gcc.target/i386/pr98161.c b/gcc/testsuite/gcc.target/i386/pr98161.c new file mode 100644 index 0000000..5825b9b --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr98161.c @@ -0,0 +1,48 @@ +/* { dg-do run } */ +/* { dg-options "-O2 -msse4" } */ +/* { dg-require-effective-target sse4} */ + +typedef unsigned short u16; +typedef unsigned int u32; +typedef unsigned char u8; + +u32 +__attribute__((__force_align_arg_pointer__)) +unreach(const u16 * pu16, u16 *dst, u32 dstlen, const u8 *src, u32 srclen) +{ + for (u32 i = dstlen; srclen && i; i--, srclen--, src++, dst++) + { + u16 off = pu16[*src]; + if (off) + { + src++; srclen--; + *dst = pu16[off + *src]; + } + } + return 56; +} + +u32 +__attribute__((__force_align_arg_pointer__)) +__attribute__((noipa)) +bug(const u16 * pu16, u16 *dst, u32 dstlen, const u8 *src, u32 srclen) +{ + if (pu16) + /* Branch should not execute, but stack realignment + * reads wrong 'pu16' value from stack. */ + return unreach(pu16, dst, dstlen, src, srclen); + + return (srclen < dstlen) ? srclen : dstlen; +} + +int +main() +{ + if (__builtin_cpu_supports ("sse4.1")) + { + /* Should return 12 */ + if (bug(0, 0, 12, 0, 34) != 12) + __builtin_abort (); + } + return 0; +} |