From: Jozef Lawrynowicz <jozef.l@mittosystems.com>
Date: Mon, 26 Nov 2018 21:35:43 +0000 (+0000)
Subject: sourcebuild.texi: Document check_effective_target_newlib_nano_io.
X-Git-Tag: basepoints/gcc-10~2791
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=571bbd0d48d5872eacbd0b681fce6e1ae754520b;p=thirdparty%2Fgcc.git

sourcebuild.texi: Document check_effective_target_newlib_nano_io.

2018-11-26  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

	gcc/ChangeLog:

	* doc/sourcebuild.texi: Document check_effective_target_newlib_nano_io.

	gcc/testsuite/ChangeLog:

	* lib/target-supports.exp (check_effective_target_newlib_nano_io): New.
	* gcc.c-torture/execute/920501-8.c: Register undefined linker symbol
	_printf_float for newlib_nano_io target.
	* gcc.c-torture/execute/930513-1.c: Likewise.
	* gcc.dg/torture/builtin-sprintf.c: Likewise.
	* gcc.c-torture/execute/ieee/920810-1.x: New.

From-SVN: r266488
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2d7bcb83f33d..fd5e8c292a41 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2018-11-26  Jozef Lawrynowicz  <jozef.l@mittosystems.com>
+
+	* doc/sourcebuild.texi: Document check_effective_target_newlib_nano_io.
+
 2018-11-26  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/88195
diff --git a/gcc/doc/sourcebuild.texi b/gcc/doc/sourcebuild.texi
index b8ab0ee629f6..6a81b17693fe 100644
--- a/gcc/doc/sourcebuild.texi
+++ b/gcc/doc/sourcebuild.texi
@@ -2152,6 +2152,10 @@ Target supports @code{mmap}.
 @item newlib
 Target supports Newlib.
 
+@item newlib_nano_io
+GCC was configured with @code{--enable-newlib-nano-formatted-io}, which reduces
+the code size of Newlib formatted I/O functions.
+
 @item pow10
 Target provides @code{pow10} function.
 
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 47f8b1993575..c617d27fc652 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,12 @@
+2018-11-26  Jozef Lawrynowicz  <jozef.l@mittosystems.com>
+
+	* lib/target-supports.exp (check_effective_target_newlib_nano_io): New. 
+	* gcc.c-torture/execute/920501-8.c: Register undefined linker symbol
+	_printf_float for newlib_nano_io target.
+	* gcc.c-torture/execute/930513-1.c: Likewise.
+	* gcc.dg/torture/builtin-sprintf.c: Likewise.
+	* gcc.c-torture/execute/ieee/920810-1.x: New.
+
 2018-11-26  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/88195
diff --git a/gcc/testsuite/gcc.c-torture/execute/920501-8.c b/gcc/testsuite/gcc.c-torture/execute/920501-8.c
index 62780a08cc78..7e4fa172ccd5 100644
--- a/gcc/testsuite/gcc.c-torture/execute/920501-8.c
+++ b/gcc/testsuite/gcc.c-torture/execute/920501-8.c
@@ -1,3 +1,5 @@
+/* { dg-additional-options "-Wl,-u,_printf_float" { target newlib_nano_io } } */
+
 #include <stdio.h>
 #include <stdarg.h>
 
diff --git a/gcc/testsuite/gcc.c-torture/execute/930513-1.c b/gcc/testsuite/gcc.c-torture/execute/930513-1.c
index 4544471ec7db..f1630076800b 100644
--- a/gcc/testsuite/gcc.c-torture/execute/930513-1.c
+++ b/gcc/testsuite/gcc.c-torture/execute/930513-1.c
@@ -1,3 +1,5 @@
+/* { dg-additional-options "-Wl,-u,_printf_float" { target newlib_nano_io } } */
+
 #include <stdio.h>
 char buf[2];
 
diff --git a/gcc/testsuite/gcc.c-torture/execute/ieee/920810-1.x b/gcc/testsuite/gcc.c-torture/execute/ieee/920810-1.x
new file mode 100644
index 000000000000..8edec730dcec
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/ieee/920810-1.x
@@ -0,0 +1,4 @@
+if { [check_effective_target_newlib_nano_io] } {
+    lappend additional_flags "-Wl,-u,_printf_float"
+}
+return 0
diff --git a/gcc/testsuite/gcc.dg/torture/builtin-sprintf.c b/gcc/testsuite/gcc.dg/torture/builtin-sprintf.c
index 6f8b7a9fb1b7..5684fd704aee 100644
--- a/gcc/testsuite/gcc.dg/torture/builtin-sprintf.c
+++ b/gcc/testsuite/gcc.dg/torture/builtin-sprintf.c
@@ -1,6 +1,7 @@
 /* PR tree-optimization/86274 - SEGFAULT when logging std::to_string(NAN)
    { dg-do run }
-   { dg-options "-O2 -Wall" } */
+   { dg-options "-O2 -Wall" }
+   { dg-additional-options "-Wl,-u,_printf_float" { target newlib_nano_io } } */
 
 #define X        "0xdeadbeef"
 #define nan(x)   __builtin_nan (x)
diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp
index fe7169158e48..7bfd5c323542 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -6710,6 +6710,11 @@ proc check_effective_target_newlib {} {
     }]
 }
 
+# Return true if GCC was configured with --enable-newlib-nano-formatted-io
+proc check_effective_target_newlib_nano_io { } {
+    return [check_configured_with "--enable-newlib-nano-formatted-io"]
+}
+
 # Some newlib versions don't provide a frexpl and instead depend
 # on frexp to implement long double conversions in their printf-like
 # functions.  This leads to broken results.  Detect such versions here.