* [SPARC] Fix PR target/80897
@ 2017-09-07 15:53 Eric Botcazou
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From: Eric Botcazou @ 2017-09-07 15:53 UTC (permalink / raw)
To: gcc-patches
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This is the Ada bootstrap failure on SPARC64/Linux that I worked around at
some point; it turns out that we can do something plausible in the back-end.
Tested on SPARC64/Linux, applied on mainline.
2017-09-07 Eric Botcazou <ebotcazou@adacore.com>
PR target/80897
* config/sparc/sparc.c (sparc_emit_set_symbolic_const64): Deal with
too large offsets.
2017-09-07 Eric Botcazou <ebotcazou@adacore.com>
* gnat.dg/opt67.adb: New test.
* gnat.dg/opt67_pkg.ad[sb]: New helper.
--
Eric Botcazou
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Index: config/sparc/sparc.c
===================================================================
--- config/sparc/sparc.c (revision 251811)
+++ config/sparc/sparc.c (working copy)
@@ -2159,9 +2159,25 @@ sparc_emit_set_const32 (rtx op0, rtx op1
void
sparc_emit_set_symbolic_const64 (rtx op0, rtx op1, rtx temp)
{
- rtx temp1, temp2, temp3, temp4, temp5;
+ rtx cst, temp1, temp2, temp3, temp4, temp5;
rtx ti_temp = 0;
+ /* Deal with too large offsets. */
+ if (GET_CODE (op1) == CONST
+ && GET_CODE (XEXP (op1, 0)) == PLUS
+ && CONST_INT_P (cst = XEXP (XEXP (op1, 0), 1))
+ && trunc_int_for_mode (INTVAL (cst), SImode) != INTVAL (cst))
+ {
+ gcc_assert (!temp);
+ temp1 = gen_reg_rtx (DImode);
+ temp2 = gen_reg_rtx (DImode);
+ sparc_emit_set_const64 (temp2, cst);
+ sparc_emit_set_symbolic_const64 (temp1, XEXP (XEXP (op1, 0), 0),
+ NULL_RTX);
+ emit_insn (gen_rtx_SET (op0, gen_rtx_PLUS (DImode, temp1, temp2)));
+ return;
+ }
+
if (temp && GET_MODE (temp) == TImode)
{
ti_temp = temp;
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