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| author | H.J. Lu <hjl@gnu.org> | 1998-06-08 01:53:56 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1998-06-07 19:53:56 -0600 |
| commit | 49fa02d9d67616530d588d5d4f0ac37be10ff70d (patch) | |
| tree | 5a3b17b74ce26ff9a5e002fcfe7b03c03a38e520 /gcc | |
| parent | 52267fcbd179e9ce12ca33a31c5b911d21deffee (diff) | |
| download | gcc-49fa02d9d67616530d588d5d4f0ac37be10ff70d.zip gcc-49fa02d9d67616530d588d5d4f0ac37be10ff70d.tar.gz gcc-49fa02d9d67616530d588d5d4f0ac37be10ff70d.tar.bz2 | |
reg-stack.c (subst_stack_regs_pat): Make sure the top of stack is the destination for conditional move insn.
* reg-stack.c (subst_stack_regs_pat): Make sure the top of
stack is the destination for conditional move insn.
From-SVN: r20324
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/reg-stack.c | 9 |
2 files changed, 14 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 3948384..627a3e9 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +Mon Jun 8 02:49:23 1998 H.J. Lu (hjl@gnu.org) + + * reg-stack.c (subst_stack_regs_pat): Make sure the top of + stack is the destination for conditional move insn. + Mon Jun 8 01:21:13 1998 Jason Merrill <jason@yorick.cygnus.com> * tree.h (TREE_VEC_END): Cast unused value to void. diff --git a/gcc/reg-stack.c b/gcc/reg-stack.c index 6496bad..ab400c5 100644 --- a/gcc/reg-stack.c +++ b/gcc/reg-stack.c @@ -2344,6 +2344,15 @@ subst_stack_regs_pat (insn, regstack, pat) case IF_THEN_ELSE: /* This insn requires the top of stack to be the destination. */ + /* If the comparison operator is an FP comparison operator, + it is handled correctly by compare_for_stack_reg () who + will move the destination to the top of stack. But if the + comparison operator is not an FP comparison operator, we + have to handle it here. */ + if (get_hard_regnum (regstack, *dest) >= FIRST_STACK_REG + && REGNO (*dest) != regstack->reg[regstack->top]) + emit_swap_insn (insn, regstack, *dest); + src1 = get_true_reg (&XEXP (SET_SRC (pat), 1)); src2 = get_true_reg (&XEXP (SET_SRC (pat), 2)); |