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| author | Paolo Bonzini <bonzini@gnu.org> | 2006-02-28 20:32:20 +0000 |
|---|---|---|
| committer | Adam Nemet <nemet@gcc.gnu.org> | 2006-02-28 20:32:20 +0000 |
| commit | d3b726902460a92cefbb1be7472d2cafece201ed (patch) | |
| tree | b59a2ff0c0c65abbe656b96ae1d8a37028083f6b /gcc/rtlhooks.c | |
| parent | e5c7f9f582b4148974efae8c9289652601909753 (diff) | |
| download | gcc-d3b726902460a92cefbb1be7472d2cafece201ed.zip gcc-d3b726902460a92cefbb1be7472d2cafece201ed.tar.gz gcc-d3b726902460a92cefbb1be7472d2cafece201ed.tar.bz2 | |
rtl.h (truncated_to_mode): Declare it.
* rtl.h (truncated_to_mode): Declare it.
(struct rtl_hooks): Add reg_truncated_to_mode hook.
* rtlhooks-def.h (RTL_HOOKS_REG_TRUNCATED_TO_MODE): New macro.
(RTL_HOOKS_INITIALIZER): Include it.
* rtlhooks.c (reg_truncated_to_mode_general): New function.
* combine.c (RTL_HOOKS_REG_TRUNCATED_TO_MODE): Override to
reg_truncated_to_mode.
* rtlanal.c (truncated_to_mode): Define it.
* simplify-rtx.c (simplify_unary_operation_1): Use it.
Co-Authored-By: Adam Nemet <anemet@caviumnetworks.com>
From-SVN: r111573
Diffstat (limited to 'gcc/rtlhooks.c')
| -rw-r--r-- | gcc/rtlhooks.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/rtlhooks.c b/gcc/rtlhooks.c index 0034da7..ece7198 100644 --- a/gcc/rtlhooks.c +++ b/gcc/rtlhooks.c @@ -117,6 +117,13 @@ reg_nonzero_bits_general (rtx x ATTRIBUTE_UNUSED, return NULL; } +bool +reg_truncated_to_mode_general (enum machine_mode mode ATTRIBUTE_UNUSED, + rtx x ATTRIBUTE_UNUSED) +{ + return false; +} + /* Assuming that X is an rtx (e.g., MEM, REG or SUBREG) for a fixed-point number, return an rtx (MEM, SUBREG, or CONST_INT) that refers to the least-significant part of X. |