https://gcc.gnu.org/g:9d7f45e9806c50bf6d8f0f6f93fa657dc418401b
commit r16-3198-g9d7f45e9806c50bf6d8f0f6f93fa657dc418401b
Author: H.J. Lu <hjl.to...@gmail.com>
Date: Wed Aug 13 14:18:26 2025 -0700
x86: Disallow MMX and 80387 in no_caller_saved_registers function
commit 9804b23198b39f85a7258be556c5e8aed44b9efc
Author: H.J. Lu <hjl.to...@gmail.com>
Date: Sun Apr 13 11:38:24 2025 -0700
x86: Add preserve_none and update no_caller_saved_registers attributes
allowed MMX/80387 instructions in functions with no_caller_saved_registers
attribute by accident. Update ix86_set_current_function to properly
check if MMX and 80387 are enabled.
gcc/
PR target/121540
* config/i386/i386-options.cc (ix86_set_current_function):
Properly check if MMX and 80387 are enabled.
gcc/testsuite/
PR target/121540
* gcc.target/i386/no-callee-saved-19a.c (dg-options): Add
"-mno-avx -mno-mmx -mno-80387"
* gcc.target/i386/no-callee-saved-19b.c: Likewise.
* gcc.target/i386/no-callee-saved-19c.c: Likewise.
* gcc.target/i386/no-callee-saved-19d.c: Likewise.
* gcc.target/i386/no-callee-saved-19e.c: Likewise.
* gcc.target/i386/pr121208-1a.c: Likewise.
* gcc.target/i386/pr121208-1b.c: Likewise.
* gcc.target/i386/pr121540-1.c: New test.
* gcc.target/i386/pr121540-2.c: Likewise.
Signed-off-by: H.J. Lu <hjl.to...@gmail.com>
Diff:
---
gcc/config/i386/i386-options.cc | 4 ++++
gcc/testsuite/gcc.target/i386/no-callee-saved-19a.c | 2 +-
gcc/testsuite/gcc.target/i386/no-callee-saved-19b.c | 2 +-
gcc/testsuite/gcc.target/i386/no-callee-saved-19c.c | 2 +-
gcc/testsuite/gcc.target/i386/no-callee-saved-19d.c | 2 +-
gcc/testsuite/gcc.target/i386/no-callee-saved-19e.c | 2 +-
gcc/testsuite/gcc.target/i386/pr121208-1a.c | 2 +-
gcc/testsuite/gcc.target/i386/pr121208-1b.c | 2 +-
gcc/testsuite/gcc.target/i386/pr121540-1.c | 8 ++++++++
gcc/testsuite/gcc.target/i386/pr121540-2.c | 8 ++++++++
10 files changed, 27 insertions(+), 7 deletions(-)
diff --git a/gcc/config/i386/i386-options.cc b/gcc/config/i386/i386-options.cc
index 09a35ef62980..136c0f2e9663 100644
--- a/gcc/config/i386/i386-options.cc
+++ b/gcc/config/i386/i386-options.cc
@@ -3556,6 +3556,10 @@ ix86_set_current_function (tree fndecl)
isa = "AVX";
else if (cfun->machine->func_type != TYPE_NORMAL)
isa = "SSE";
+ else if (TARGET_MMX)
+ isa = "MMX/3Dnow";
+ else if (TARGET_80387)
+ isa = "80387";
else
isa = NULL;
}
diff --git a/gcc/testsuite/gcc.target/i386/no-callee-saved-19a.c
b/gcc/testsuite/gcc.target/i386/no-callee-saved-19a.c
index 12f35cfa8bba..3ba578df8c29 100644
--- a/gcc/testsuite/gcc.target/i386/no-callee-saved-19a.c
+++ b/gcc/testsuite/gcc.target/i386/no-callee-saved-19a.c
@@ -1,5 +1,5 @@
/* { dg-do compile { target { *-*-linux* && lp64 } } } */
-/* { dg-options "-O2 -fno-pic -mtune=generic -msse2 -mno-apxf
-mtune-ctrl=prologue_using_move,epilogue_using_move" } */
+/* { dg-options "-O2 -fno-pic -mtune=generic -msse2 -mno-avx -mno-mmx
-mno-80387 -mno-apxf -mtune-ctrl=prologue_using_move,epilogue_using_move" } */
/* Keep labels and directives ('.cfi_startproc', '.cfi_endproc'). */
/* { dg-final { check-function-bodies "**" "" "" { target "*-*-*" } {^\t?\.}
} } */
diff --git a/gcc/testsuite/gcc.target/i386/no-callee-saved-19b.c
b/gcc/testsuite/gcc.target/i386/no-callee-saved-19b.c
index c9343a654702..dc38936a61a9 100644
--- a/gcc/testsuite/gcc.target/i386/no-callee-saved-19b.c
+++ b/gcc/testsuite/gcc.target/i386/no-callee-saved-19b.c
@@ -1,5 +1,5 @@
/* { dg-do compile { target { *-*-linux* && maybe_x32 } } } */
-/* { dg-options "-O2 -mx32 -fno-pic -mtune=generic -msse2 -mno-apxf
-mtune-ctrl=prologue_using_move,epilogue_using_move" } */
+/* { dg-options "-O2 -mx32 -fno-pic -mtune=generic -msse2 -mno-avx -mno-mmx
-mno-80387 -mno-apxf -mtune-ctrl=prologue_using_move,epilogue_using_move" } */
/* Keep labels and directives ('.cfi_startproc', '.cfi_endproc'). */
/* { dg-final { check-function-bodies "**" "" "" { target "*-*-*" } {^\t?\.}
} } */
diff --git a/gcc/testsuite/gcc.target/i386/no-callee-saved-19c.c
b/gcc/testsuite/gcc.target/i386/no-callee-saved-19c.c
index 05aca9f4b119..e7f247b723cb 100644
--- a/gcc/testsuite/gcc.target/i386/no-callee-saved-19c.c
+++ b/gcc/testsuite/gcc.target/i386/no-callee-saved-19c.c
@@ -1,5 +1,5 @@
/* { dg-do compile { target { *-*-linux* && ia32 } } } */
-/* { dg-options "-O2 -fno-pic -mtune=generic -msse2
-mtune-ctrl=prologue_using_move,epilogue_using_move" } */
+/* { dg-options "-O2 -fno-pic -mtune=generic -msse2 -mno-avx -mno-mmx
-mno-80387 -mtune-ctrl=prologue_using_move,epilogue_using_move" } */
/* Keep labels and directives ('.cfi_startproc', '.cfi_endproc'). */
/* { dg-final { check-function-bodies "**" "" "" { target "*-*-*" } {^\t?\.}
} } */
diff --git a/gcc/testsuite/gcc.target/i386/no-callee-saved-19d.c
b/gcc/testsuite/gcc.target/i386/no-callee-saved-19d.c
index b3caa3d81b2d..4657e170350b 100644
--- a/gcc/testsuite/gcc.target/i386/no-callee-saved-19d.c
+++ b/gcc/testsuite/gcc.target/i386/no-callee-saved-19d.c
@@ -1,5 +1,5 @@
/* { dg-do compile { target { *-*-linux* && lp64 } } } */
-/* { dg-options "-O2 -fno-pic -mtune=generic -msse2 -mapxf
-mtune-ctrl=prologue_using_move,epilogue_using_move" } */
+/* { dg-options "-O2 -fno-pic -mtune=generic -msse2 -mno-avx -mno-mmx
-mno-80387 -mapxf -mtune-ctrl=prologue_using_move,epilogue_using_move" } */
/* Keep labels and directives ('.cfi_startproc', '.cfi_endproc'). */
/* { dg-final { check-function-bodies "**" "" "" { target "*-*-*" } {^\t?\.}
} } */
diff --git a/gcc/testsuite/gcc.target/i386/no-callee-saved-19e.c
b/gcc/testsuite/gcc.target/i386/no-callee-saved-19e.c
index 3fcb41ff1969..8e0bbe82eae0 100644
--- a/gcc/testsuite/gcc.target/i386/no-callee-saved-19e.c
+++ b/gcc/testsuite/gcc.target/i386/no-callee-saved-19e.c
@@ -1,5 +1,5 @@
/* { dg-do compile { target { *-*-linux* && maybe_x32 } } } */
-/* { dg-options "-O2 -mx32 -fno-pic -mtune=generic -msse2 -mapxf
-mtune-ctrl=prologue_using_move,epilogue_using_move" } */
+/* { dg-options "-O2 -mx32 -fno-pic -mtune=generic -msse2 -mno-avx -mno-mmx
-mno-80387 -mapxf -mtune-ctrl=prologue_using_move,epilogue_using_move" } */
/* Keep labels and directives ('.cfi_startproc', '.cfi_endproc'). */
/* { dg-final { check-function-bodies "**" "" "" { target "*-*-*" } {^\t?\.}
} } */
diff --git a/gcc/testsuite/gcc.target/i386/pr121208-1a.c
b/gcc/testsuite/gcc.target/i386/pr121208-1a.c
index cb8bd0bc8d28..f799bc81d4d8 100644
--- a/gcc/testsuite/gcc.target/i386/pr121208-1a.c
+++ b/gcc/testsuite/gcc.target/i386/pr121208-1a.c
@@ -1,5 +1,5 @@
/* { dg-do compile { target *-*-linux* } } */
-/* { dg-options "-O2 -fPIC -mno-80387 -mtls-dialect=gnu" } */
+/* { dg-options "-O2 -fPIC -mno-avx -mno-mmx -mno-80387 -mtls-dialect=gnu" } */
extern __thread int bar;
extern void func (void);
diff --git a/gcc/testsuite/gcc.target/i386/pr121208-1b.c
b/gcc/testsuite/gcc.target/i386/pr121208-1b.c
index 037e9a0899c1..ba37abccfc00 100644
--- a/gcc/testsuite/gcc.target/i386/pr121208-1b.c
+++ b/gcc/testsuite/gcc.target/i386/pr121208-1b.c
@@ -1,4 +1,4 @@
/* { dg-do compile { target *-*-linux* } } */
-/* { dg-options "-O2 -fPIC -mno-80387 -mtls-dialect=gnu2" } */
+/* { dg-options "-O2 -fPIC -mno-avx -mno-mmx -mno-80387 -mtls-dialect=gnu2" }
*/
#include "pr121208-1a.c"
diff --git a/gcc/testsuite/gcc.target/i386/pr121540-1.c
b/gcc/testsuite/gcc.target/i386/pr121540-1.c
new file mode 100644
index 000000000000..dee9c279d397
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr121540-1.c
@@ -0,0 +1,8 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -march=x86-64" } */
+
+void
+ __attribute__ ((no_caller_saved_registers))
+fn (void)
+{ /* { dg-message "sorry, unimplemented: MMX/3Dnow instructions aren't
allowed" } */
+}
diff --git a/gcc/testsuite/gcc.target/i386/pr121540-2.c
b/gcc/testsuite/gcc.target/i386/pr121540-2.c
new file mode 100644
index 000000000000..15a3f40af330
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr121540-2.c
@@ -0,0 +1,8 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -march=x86-64 -mno-mmx" } */
+
+void
+ __attribute__ ((no_caller_saved_registers))
+fn (void)
+{ /* { dg-message "sorry, unimplemented: 80387 instructions aren't allowed" }
*/
+}
