* [PATCH] Fix invalid RTL sharing caused by STV changes
@ 2019-08-21 7:58 Richard Biener
0 siblings, 0 replies; only message in thread
From: Richard Biener @ 2019-08-21 7:58 UTC (permalink / raw)
To: gcc-patches
I am testing the following and will commit it as obvious.
Richard.
2019-08-21 Richard Biener <rguenther@suse.de>
PR target/91498
* config/i386/i386-features.c
(general_scalar_chain::make_vector_copies): Copy stack temporary
rtx when using it multiple times.
(general_scalar_chain::convert_reg): Likewise.
Index: gcc/config/i386/i386-features.c
===================================================================
--- gcc/config/i386/i386-features.c (revision 274764)
+++ gcc/config/i386/i386-features.c (working copy)
@@ -706,7 +706,7 @@ general_scalar_chain::make_vector_copies
gen_rtx_SUBREG (SImode, reg, 4));
}
else
- emit_move_insn (tmp, reg);
+ emit_move_insn (copy_rtx (tmp), reg);
emit_insn (gen_rtx_SET (gen_rtx_SUBREG (vmode, vreg, 0),
gen_gpr_to_xmm_move_src (vmode, tmp)));
}
@@ -810,7 +810,7 @@ general_scalar_chain::convert_reg (unsig
adjust_address (tmp, SImode, 4));
}
else
- emit_move_insn (scopy, tmp);
+ emit_move_insn (scopy, copy_rtx (tmp));
}
else if (!TARGET_64BIT && smode == DImode)
{
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2019-08-21 7:58 [PATCH] Fix invalid RTL sharing caused by STV changes Richard Biener
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