65 lines
1.9 KiB
Diff
65 lines
1.9 KiB
Diff
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From 191675bdfd4cef0fbcf642f53da82a49bd23a3bf Mon Sep 17 00:00:00 2001
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From: Lulu Cheng <chenglulu@loongson.cn>
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Date: Fri, 12 Jan 2024 17:06:30 +0800
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Subject: [PATCH 112/188] LoongArch: Assign the '/u' attribute to the mem to
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which the global offset table belongs.
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gcc/ChangeLog:
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* config/loongarch/loongarch.cc (loongarch_split_symbol):
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Assign the '/u' attribute to the mem.
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gcc/testsuite/ChangeLog:
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* g++.target/loongarch/got-load.C: New test.
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---
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gcc/config/loongarch/loongarch.cc | 5 +++++
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gcc/testsuite/g++.target/loongarch/got-load.C | 19 +++++++++++++++++++
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2 files changed, 24 insertions(+)
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create mode 100644 gcc/testsuite/g++.target/loongarch/got-load.C
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diff --git a/gcc/config/loongarch/loongarch.cc b/gcc/config/loongarch/loongarch.cc
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index 13481130b..7da00c132 100644
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--- a/gcc/config/loongarch/loongarch.cc
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+++ b/gcc/config/loongarch/loongarch.cc
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@@ -3198,6 +3198,11 @@ loongarch_split_symbol (rtx temp, rtx addr, machine_mode mode, rtx *low_out)
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rtx mem = gen_rtx_MEM (Pmode, low);
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*low_out = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, mem),
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UNSPEC_LOAD_FROM_GOT);
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+
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+ /* Nonzero in a mem, if the memory is statically allocated and
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+ read-only. A common example of the later is a shared library’s
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+ global offset table. */
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+ MEM_READONLY_P (mem) = 1;
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}
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break;
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diff --git a/gcc/testsuite/g++.target/loongarch/got-load.C b/gcc/testsuite/g++.target/loongarch/got-load.C
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new file mode 100644
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index 000000000..20924c739
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--- /dev/null
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+++ b/gcc/testsuite/g++.target/loongarch/got-load.C
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@@ -0,0 +1,19 @@
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+/* { dg-do compile } */
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+/* { dg-options "-mabi=lp64d -O2 -mexplicit-relocs -mcmodel=normal -fdump-rtl-expand" } */
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+/* { dg-final { scan-rtl-dump-times "mem/u" 2 "expand" } } */
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+
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+#include <bits/stdc++.h>
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+
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+using namespace std;
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+
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+int lr[100005][2];
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+
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+void
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+test(void)
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+{
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+ int n;
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+
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+ cin >> n;
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+ for (int i = 0; i < n; ++i)
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+ cin >> lr[i][0] >> lr[i][1];
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+}
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--
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2.43.0
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