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