From 61945d8cd97508c8d5e072b75cb1f8fe8ec23c86 Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Wed, 16 Jul 2008 11:45:57 +0100 Subject: [PATCH] re PR target/36827 (newlib:libm/math/k_rem_pio2.c fails in reload) PR target/36827 * config/m32c/m32c.c (BIG_FB_ADJ): Move definition earlier. (m32c_legitimate_address_p): Handle "++rii" addresses created by m32c_legitimize_reload_address. From-SVN: r137875 --- gcc/ChangeLog | 7 +++++++ gcc/config/m32c/m32c.c | 15 +++++++++++++-- 2 files changed, 20 insertions(+), 2 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a6788fb08e0..15e82057f17 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2008-07-16 Joseph Myers + + PR target/36827 + * config/m32c/m32c.c (BIG_FB_ADJ): Move definition earlier. + (m32c_legitimate_address_p): Handle "++rii" addresses created by + m32c_legitimize_reload_address. + 2007-07-16 Rafael Avila de Espindola * c-decl.c (merge_decls): Keep DECL_SOURCE_LOCATION and diff --git a/gcc/config/m32c/m32c.c b/gcc/config/m32c/m32c.c index b0733dd8364..ef6ba16b5a9 100644 --- a/gcc/config/m32c/m32c.c +++ b/gcc/config/m32c/m32c.c @@ -1778,6 +1778,8 @@ m32c_init_libfuncs (void) /* Addressing Modes */ +#define BIG_FB_ADJ 0 + /* Used by GO_IF_LEGITIMATE_ADDRESS. The r8c/m32c family supports a wide range of non-orthogonal addressing modes, including the ability to double-indirect on *some* of them. Not all insns @@ -1895,6 +1897,17 @@ m32c_legitimate_address_p (enum machine_mode mode, rtx x, int strict) return 0; } } + if (RTX_IS ("++rii")) + { + rtx reg = patternr[2]; + HOST_WIDE_INT offs = INTVAL (patternr[3]); + + /* Avoid reloads for addresses generated by + m32c_legitimize_reload_address being generated by + find_reloads_subreg_address. */ + if (REGNO (reg) == FB_REGNO && offs == -BIG_FB_ADJ) + return 1; + } return 0; } @@ -1942,8 +1955,6 @@ m32c_reg_ok_for_base_p (rtx x, int strict) frame, so the third case seems best. Note that we subtract the zero, but detect that in the addhi3 pattern. */ -#define BIG_FB_ADJ 0 - /* Implements LEGITIMIZE_ADDRESS. The only address we really have to worry about is frame base offsets, as $fb has a limited displacement range. We deal with this by attempting to reload $fb -- 2.30.2