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| author | davem <davem@138bc75d-0d04-0410-961f-82ee72b054a4> | 2013-02-07 23:19:27 +0000 |
|---|---|---|
| committer | davem <davem@138bc75d-0d04-0410-961f-82ee72b054a4> | 2013-02-07 23:19:27 +0000 |
| commit | 690bfd6a1e356ae3b7a33fde2614d6dc10c14f59 (patch) | |
| tree | f23a678c9097ac59a77279afd266d0db3247bbd9 /gcc/var-tracking.c | |
| parent | cb8b32f54b7a8c1de0c178db516e07a6b80a611f (diff) | |
| download | gcc-690bfd6a1e356ae3b7a33fde2614d6dc10c14f59.tar.gz | |
Fix variable tracking for leaf functions on sparc.
* dwarf2out.c (based_loc_descr): Perform leaf register remapping
on 'reg'.
* var-tracking.c (vt_add_function_parameter): Test the presence of
HAVE_window_save properly and do not remap argument registers when
we have a leaf function.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@195869 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/var-tracking.c')
| -rw-r--r-- | gcc/var-tracking.c | 45 |
1 files changed, 24 insertions, 21 deletions
diff --git a/gcc/var-tracking.c b/gcc/var-tracking.c index 714acb69692..0db15625b70 100644 --- a/gcc/var-tracking.c +++ b/gcc/var-tracking.c @@ -9502,31 +9502,34 @@ vt_add_function_parameter (tree parm) /* DECL_INCOMING_RTL uses the INCOMING_REGNO of parameter registers. If the target machine has an explicit window save instruction, the actual entry value is the corresponding OUTGOING_REGNO instead. */ - if (REG_P (incoming) - && HARD_REGISTER_P (incoming) - && OUTGOING_REGNO (REGNO (incoming)) != REGNO (incoming)) + if (HAVE_window_save && !crtl->uses_only_leaf_regs) { - parm_reg_t p; - p.incoming = incoming; - incoming - = gen_rtx_REG_offset (incoming, GET_MODE (incoming), - OUTGOING_REGNO (REGNO (incoming)), 0); - p.outgoing = incoming; - vec_safe_push (windowed_parm_regs, p); - } - else if (MEM_P (incoming) - && REG_P (XEXP (incoming, 0)) - && HARD_REGISTER_P (XEXP (incoming, 0))) - { - rtx reg = XEXP (incoming, 0); - if (OUTGOING_REGNO (REGNO (reg)) != REGNO (reg)) + if (REG_P (incoming) + && HARD_REGISTER_P (incoming) + && OUTGOING_REGNO (REGNO (incoming)) != REGNO (incoming)) { parm_reg_t p; - p.incoming = reg; - reg = gen_raw_REG (GET_MODE (reg), OUTGOING_REGNO (REGNO (reg))); - p.outgoing = reg; + p.incoming = incoming; + incoming + = gen_rtx_REG_offset (incoming, GET_MODE (incoming), + OUTGOING_REGNO (REGNO (incoming)), 0); + p.outgoing = incoming; vec_safe_push (windowed_parm_regs, p); - incoming = replace_equiv_address_nv (incoming, reg); + } + else if (MEM_P (incoming) + && REG_P (XEXP (incoming, 0)) + && HARD_REGISTER_P (XEXP (incoming, 0))) + { + rtx reg = XEXP (incoming, 0); + if (OUTGOING_REGNO (REGNO (reg)) != REGNO (reg)) + { + parm_reg_t p; + p.incoming = reg; + reg = gen_raw_REG (GET_MODE (reg), OUTGOING_REGNO (REGNO (reg))); + p.outgoing = reg; + vec_safe_push (windowed_parm_regs, p); + incoming = replace_equiv_address_nv (incoming, reg); + } } } #endif |