85 lines
2.6 KiB
Diff
85 lines
2.6 KiB
Diff
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From 619b6081064bf85a19f4659e278a361875e4f9fb Mon Sep 17 00:00:00 2001
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From: chenxiaolong <chenxiaolong@loongson.cn>
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Date: Tue, 24 Oct 2023 14:40:14 +0800
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Subject: [PATCH 019/188] LoongArch: Implement __builtin_thread_pointer for
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TLS.
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gcc/ChangeLog:
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* config/loongarch/loongarch.md (get_thread_pointer<mode>):Adds the
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instruction template corresponding to the __builtin_thread_pointer
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function.
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* doc/extend.texi:Add the __builtin_thread_pointer function support
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description to the documentation.
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gcc/testsuite/ChangeLog:
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* gcc.target/loongarch/builtin_thread_pointer.c: New test.
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---
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gcc/config/loongarch/loongarch.md | 7 +++++++
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gcc/doc/extend.texi | 5 +++++
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.../gcc.target/loongarch/builtin_thread_pointer.c | 10 ++++++++++
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3 files changed, 22 insertions(+)
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create mode 100644 gcc/testsuite/gcc.target/loongarch/builtin_thread_pointer.c
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diff --git a/gcc/config/loongarch/loongarch.md b/gcc/config/loongarch/loongarch.md
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index c4c6baa60..80487488d 100644
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--- a/gcc/config/loongarch/loongarch.md
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+++ b/gcc/config/loongarch/loongarch.md
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@@ -113,6 +113,7 @@
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(define_constants
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[(RETURN_ADDR_REGNUM 1)
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+ (TP_REGNUM 2)
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(T0_REGNUM 12)
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(T1_REGNUM 13)
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(S0_REGNUM 23)
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@@ -3647,6 +3648,12 @@
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[(set_attr "length" "0")
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(set_attr "type" "ghost")])
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+;; Named pattern for expanding thread pointer reference.
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+(define_expand "get_thread_pointer<mode>"
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+ [(set (match_operand:P 0 "register_operand" "=r")
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+ (reg:P TP_REGNUM))]
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+ "HAVE_AS_TLS"
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+ {})
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(define_split
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[(match_operand 0 "small_data_pattern")]
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diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi
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index 1d1bac255..497c6de5f 100644
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--- a/gcc/doc/extend.texi
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+++ b/gcc/doc/extend.texi
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@@ -16257,6 +16257,11 @@ function you need to include @code{larchintrin.h}.
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void __break (imm0_32767)
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@end smallexample
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+Returns the value that is currently set in the @samp{tp} register.
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+@smallexample
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+ void * __builtin_thread_pointer (void)
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+@end smallexample
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+
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@node MIPS DSP Built-in Functions
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@subsection MIPS DSP Built-in Functions
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diff --git a/gcc/testsuite/gcc.target/loongarch/builtin_thread_pointer.c b/gcc/testsuite/gcc.target/loongarch/builtin_thread_pointer.c
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new file mode 100644
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index 000000000..541e3b143
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--- /dev/null
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+++ b/gcc/testsuite/gcc.target/loongarch/builtin_thread_pointer.c
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@@ -0,0 +1,10 @@
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+/* { dg-do compile } */
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+/* { dg-require-effective-target tls_native } */
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+/* { dg-options "-O2" } */
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+/* { dg-final { scan-assembler "or\t\\\$r4,\\\$r2,\\\$r0" } } */
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+
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+void *
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+get_tp ()
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+{
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+ return __builtin_thread_pointer ();
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+}
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--
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2.43.0
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