52 lines
1.5 KiB
Diff
52 lines
1.5 KiB
Diff
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From 16210e6270e200cd4892a90ecef608906be3a130 Mon Sep 17 00:00:00 2001
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From: Kito Cheng <kito.cheng@gmail.com>
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Date: Thu, 4 May 2017 02:11:13 +0800
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Subject: [PATCH] RISC-V: Handle non-legitimate address in
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riscv_legitimize_move
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GCC may generate non-legitimate address due to we allow some
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load/store with non-legitimate address in pic.md.
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2017-05-12 Kito Cheng <kito.cheng@gmail.com>
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* config/riscv/riscv.c (riscv_legitimize_move): Handle
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non-legitimate address.
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---
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Upstream-Status: Backport
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Signed-off-by: Khem Raj <raj.khem@gmail.com>
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gcc/ChangeLog | 5 +++++
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gcc/config/riscv/riscv.c | 16 ++++++++++++++++
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2 files changed, 21 insertions(+)
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diff --git a/gcc/config/riscv/riscv.c b/gcc/config/riscv/riscv.c
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index f7fec4bfcf8..d519be1659a 100644
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--- a/gcc/config/riscv/riscv.c
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+++ b/gcc/config/riscv/riscv.c
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@@ -1385,6 +1385,22 @@ riscv_legitimize_move (enum machine_mode mode, rtx dest, rtx src)
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return true;
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}
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+ /* RISC-V GCC may generate non-legitimate address due to we provide some
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+ pattern for optimize access PIC local symbol and it's make GCC generate
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+ unrecognizable instruction during optmizing. */
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+
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+ if (MEM_P (dest) && !riscv_legitimate_address_p (mode, XEXP (dest, 0),
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+ reload_completed))
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+ {
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+ XEXP (dest, 0) = riscv_force_address (XEXP (dest, 0), mode);
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+ }
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+
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+ if (MEM_P (src) && !riscv_legitimate_address_p (mode, XEXP (src, 0),
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+ reload_completed))
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+ {
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+ XEXP (src, 0) = riscv_force_address (XEXP (src, 0), mode);
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+ }
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+
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return false;
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}
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--
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2.14.2
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