diff options
| author | davem <davem@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-05-06 07:09:21 +0000 |
|---|---|---|
| committer | davem <davem@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-05-06 07:09:21 +0000 |
| commit | 08e984ce526db0f4e30893cf3c8a793e5cdae011 (patch) | |
| tree | 4f4a72b628186718d6c1cc455aa63bce5349ac76 /gcc/config/sparc | |
| parent | c3dc40b11015cee0203f63eea55d05b4a887df9e (diff) | |
| download | gcc-08e984ce526db0f4e30893cf3c8a793e5cdae011.tar.gz | |
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.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@53204 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/config/sparc')
| -rw-r--r-- | gcc/config/sparc/sparc.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/gcc/config/sparc/sparc.c b/gcc/config/sparc/sparc.c index b28bcf53e8c..cd7c983954e 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); |