diff options
| -rw-r--r-- | gcc/doc/rtl.texi | 4 | ||||
| -rw-r--r-- | gcc/genemit.c | 8 | ||||
| -rw-r--r-- | gcc/read-rtl.c | 9 |
3 files changed, 19 insertions, 2 deletions
diff --git a/gcc/doc/rtl.texi b/gcc/doc/rtl.texi index 69c481f..edbc60f 100644 --- a/gcc/doc/rtl.texi +++ b/gcc/doc/rtl.texi @@ -1719,13 +1719,13 @@ of code @code{const_double} and therefore a syntactic alias has been provided: @smallexample -(const_double_zero) +(const_double_zero:@var{m}) @end smallexample standing for: @smallexample -(const_double 0 0 @dots{}) +(const_double:@var{m} 0 0 @dots{}) @end smallexample for matching the floating-point value zero, possibly the only useful one. diff --git a/gcc/genemit.c b/gcc/genemit.c index 3cd6499..89d9e99 100644 --- a/gcc/genemit.c +++ b/gcc/genemit.c @@ -195,6 +195,14 @@ gen_exp (rtx x, enum rtx_code subroutine_type, char *used, md_rtx_info *info) return; case CONST_DOUBLE: + /* Handle `const_double_zero' rtx. */ + if (CONST_DOUBLE_REAL_VALUE (x)->cl == rvc_zero) + { + printf ("CONST_DOUBLE_ATOF (\"0\", %smode)", + GET_MODE_NAME (GET_MODE (x))); + return; + } + /* Fall through. */ case CONST_FIXED: case CONST_WIDE_INT: /* These shouldn't be written in MD files. Instead, the appropriate diff --git a/gcc/read-rtl.c b/gcc/read-rtl.c index 11e2686..9254028 100644 --- a/gcc/read-rtl.c +++ b/gcc/read-rtl.c @@ -1658,6 +1658,15 @@ rtx_reader::read_rtx_code (const char *code_name) return_rtx = rtx_alloc (code); memset (return_rtx, 0, RTX_CODE_SIZE (code)); PUT_CODE (return_rtx, code); + c = read_skip_spaces (); + if (c == ':') + { + file_location loc = read_name (&name); + record_potential_iterator_use (&modes, loc, return_rtx, 0, + name.string); + } + else + unread_char (c); return return_rtx; } |