From 08e984ce526db0f4e30893cf3c8a793e5cdae011 Mon Sep 17 00:00:00 2001 From: davem Date: Mon, 6 May 2002 07:09:21 +0000 Subject: [PATCH] 2002-05-06 David S. Miller * 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 --- gcc/ChangeLog | 5 +++++ gcc/config/sparc/sparc.c | 22 ++++++++++++++++++++-- 2 files changed, 25 insertions(+), 2 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 91effc86db4..543d1c61fa2 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2002-05-06 David S. Miller + + * config/sparc/sparc.c (emit_soft_tfmode_libcall): Do not + allow result to overlap input operands in memory. + 2002-05-06 Neil Booth doc: 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); -- 2.11.0