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| author | David S. Miller <davem@redhat.com> | 2002-05-06 00:09:21 -0700 |
|---|---|---|
| committer | David S. Miller <davem@gcc.gnu.org> | 2002-05-06 00:09:21 -0700 |
| commit | 0ac941a0729f8c0b6685265adf8ef7365ef80dbe (patch) | |
| tree | 4f4a72b628186718d6c1cc455aa63bce5349ac76 | |
| parent | 95ff5d3fad7df3df18c91b3c834d983c52b62423 (diff) | |
| download | gcc-0ac941a0729f8c0b6685265adf8ef7365ef80dbe.zip gcc-0ac941a0729f8c0b6685265adf8ef7365ef80dbe.tar.gz gcc-0ac941a0729f8c0b6685265adf8ef7365ef80dbe.tar.bz2 | |
sparc.c (emit_soft_tfmode_libcall): Do not allow result to overlap input operands in memory.
2002-05-06 David S. Miller <davem@redhat.com>
* config/sparc/sparc.c (emit_soft_tfmode_libcall): Do not
allow result to overlap input operands in memory.
From-SVN: r53204
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/sparc/sparc.c | 22 |
2 files changed, 25 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 91effc8..543d1c6 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2002-05-06 David S. Miller <davem@redhat.com> + + * config/sparc/sparc.c (emit_soft_tfmode_libcall): Do not + allow result to overlap input operands in memory. + 2002-05-06 Neil Booth <neil@daikokuya.demon.co.uk> doc: diff --git a/gcc/config/sparc/sparc.c b/gcc/config/sparc/sparc.c index b28bcf5..cd7c983 100644 --- a/gcc/config/sparc/sparc.c +++ b/gcc/config/sparc/sparc.c @@ -2476,7 +2476,7 @@ emit_soft_tfmode_libcall (func_name, nargs, operands) rtx *operands; { rtx ret_slot = NULL, arg[3], func_sym; - int i; + int i, j; /* We only expect to be called for conversions, unary, and binary ops. */ if (nargs < 2 || nargs > 3) @@ -2491,7 +2491,25 @@ emit_soft_tfmode_libcall (func_name, nargs, operands) if (GET_MODE (this_arg) == TFmode) { if (GET_CODE (this_arg) == MEM) - this_arg = XEXP (this_arg, 0); + { + this_arg = XEXP (this_arg, 0); + + /* Make sure the output is not in the same place + as one of our inputs. */ + if (i == 0) + { + for (j = 1; j < nargs; j++) + if (rtx_equal_p (operands[0], operands[j])) + break; + + if (j != nargs) + { + ret_slot = assign_stack_temp (TFmode, + GET_MODE_SIZE (TFmode), 0); + this_arg = XEXP (ret_slot, 0); + } + } + } else if (CONSTANT_P (this_arg)) { this_slot = force_const_mem (TFmode, this_arg); |