Although this is a Darwin-specific change, I need to touch
target-supports.exp and several tests in i386.exp.
tested on x86_64-darwin and x86_64-linux-gnu
doc change tested with “make pdf”,
OK for trunk?
backports? (where the tests fail).
gcc/
* config/i386/darwin.h: Reject -mfentry*.
* doc/sourcebuild.texi: Document mfentry target support.
gcc/testsuite/
* lib/target-supports.exp (check_effective_target_mfentry): New.
* gcc.target/i386/fentry-override.c: Require effective target mfentry,
* gcc/testsuite/gcc.target/i386/fentry.c: Likewise
* gcc.target/i386/fentryname1.c: Likewise
* gcc.target/i386/fentryname2.c: Likewise
* gcc.target/i386/fentryname3.c: Likewise
* gcc.target/i386/nop-mcount.c: Likewise
* gcc.target/i386/pr82699-2.c: Likewise
* gcc.target/i386/pr82699-4.c: Likewise
* gcc.target/i386/pr82699-5.c: Likewise
* gcc.target/i386/pr82699-6.c: Likewise
* gcc.target/i386/returninst1.c: Likewise
* gcc.target/i386/returninst2.c: Likewise
* gcc.target/i386/returninst3.c : Likewise
diff --git a/gcc/config/i386/darwin.h b/gcc/config/i386/darwin.h
index fe11ec9..1128428 100644
--- a/gcc/config/i386/darwin.h
+++ b/gcc/config/i386/darwin.h
@@ -132,7 +132,8 @@ extern int darwin_emit_branch_islands;
#define CC1_SPEC "%(cc1_cpu) \
%{!mkernel:%{!static:%{!mdynamic-no-pic:-fPIC}}} \
%{g: %{!fno-eliminate-unused-debug-symbols: -feliminate-unused-debug-symbols
}} \
- %{mx32:%eDarwin is not an mx32 platform}" \
+ %{mx32:%eDarwin is not an mx32 platform} \
+ %{mfentry*:%eDarwin does not support -mfentry or associated options}" \
DARWIN_CC1_SPEC
#undef ASM_SPEC
diff --git a/gcc/doc/sourcebuild.texi b/gcc/doc/sourcebuild.texi
index cf12d74..546af7f 100644
--- a/gcc/doc/sourcebuild.texi
+++ b/gcc/doc/sourcebuild.texi
@@ -2382,6 +2382,10 @@ Target supports compiling @code{aes} instructions.
@item fma4
Target supports compiling @code{fma4} instructions.
+@item mfentry
+Target supports the @code{-mfentry} option that alters the
+position of profiling calls such that they precede the prologue.
+
@item ms_hook_prologue
Target supports attribute @code{ms_hook_prologue}.
diff --git a/gcc/testsuite/gcc.target/i386/fentry-override.c
b/gcc/testsuite/gcc.target/i386/fentry-override.c
index 7bc5fc4..efba1bf 100644
--- a/gcc/testsuite/gcc.target/i386/fentry-override.c
+++ b/gcc/testsuite/gcc.target/i386/fentry-override.c
@@ -1,5 +1,6 @@
/* Test -mfentry override */
/* { dg-do compile { target { *-*-linux* && { ! ia32 } } } } */
+/* { dg-require-effective-target mfentry } */
/* { dg-options "-mfentry" } */
/* { dg-final { scan-assembler-not "__fentry__" } } */
/* Origin: Andi Kleen */
diff --git a/gcc/testsuite/gcc.target/i386/fentry.c
b/gcc/testsuite/gcc.target/i386/fentry.c
index 2449e75..28edd10 100644
--- a/gcc/testsuite/gcc.target/i386/fentry.c
+++ b/gcc/testsuite/gcc.target/i386/fentry.c
@@ -1,5 +1,6 @@
/* Test -mfentry */
/* { dg-do compile { target { *-*-linux* && { ! ia32 } } } } */
+/* { dg-require-effective-target mfentry } */
/* { dg-options "-fprofile -mfentry" } */
/* { dg-final { scan-assembler "__fentry__" } } */
/* Origin: Andi Kleen */
diff --git a/gcc/testsuite/gcc.target/i386/fentryname1.c
b/gcc/testsuite/gcc.target/i386/fentryname1.c
index 6d2e76d..1265342 100644
--- a/gcc/testsuite/gcc.target/i386/fentryname1.c
+++ b/gcc/testsuite/gcc.target/i386/fentryname1.c
@@ -1,4 +1,5 @@
/* { dg-do compile } */
+/* { dg-require-effective-target mfentry } */
/* { dg-options "-pg -mfentry -mfentry-name=foo" } */
/* { dg-final { scan-assembler "call.*foo" } } */
/* { dg-final { scan-assembler "call.*bar" } } */
diff --git a/gcc/testsuite/gcc.target/i386/fentryname2.c
b/gcc/testsuite/gcc.target/i386/fentryname2.c
index 7d102bf..c51c5d1 100644
--- a/gcc/testsuite/gcc.target/i386/fentryname2.c
+++ b/gcc/testsuite/gcc.target/i386/fentryname2.c
@@ -1,4 +1,5 @@
/* { dg-do compile } */
+/* { dg-require-effective-target mfentry } */
/* { dg-options "-pg -mfentry -mrecord-mcount -mfentry-section=foo" } */
/* { dg-final { scan-assembler "section.*foo" } } */
/* { dg-final { scan-assembler "section.*bar" } } */
diff --git a/gcc/testsuite/gcc.target/i386/fentryname3.c
b/gcc/testsuite/gcc.target/i386/fentryname3.c
index 777f4e4..5688109 100644
--- a/gcc/testsuite/gcc.target/i386/fentryname3.c
+++ b/gcc/testsuite/gcc.target/i386/fentryname3.c
@@ -1,4 +1,5 @@
/* { dg-do compile } */
+/* { dg-require-effective-target mfentry } */
/* { dg-options "-pg -mfentry" } */
/* { dg-final { scan-assembler "section.*__entry_loc" } } */
/* { dg-final { scan-assembler "0x0f, 0x1f, 0x44, 0x00, 0x00" } } */
diff --git a/gcc/testsuite/gcc.target/i386/nop-mcount.c
b/gcc/testsuite/gcc.target/i386/nop-mcount.c
index a8e14bc..a5f8d27 100644
--- a/gcc/testsuite/gcc.target/i386/nop-mcount.c
+++ b/gcc/testsuite/gcc.target/i386/nop-mcount.c
@@ -1,5 +1,6 @@
/* Test -mnop-mcount */
/* { dg-do compile { target { *-*-linux* && nonpic } } } */
+/* { dg-require-effective-target mfentry } */
/* { dg-options "-pg -mfentry -mrecord-mcount -mnop-mcount" } */
/* { dg-final { scan-assembler-not "__fentry__" } } */
/* Origin: Andi Kleen */
diff --git a/gcc/testsuite/gcc.target/i386/pr82699-2.c
b/gcc/testsuite/gcc.target/i386/pr82699-2.c
index 07a4ccb..c43cf44 100644
--- a/gcc/testsuite/gcc.target/i386/pr82699-2.c
+++ b/gcc/testsuite/gcc.target/i386/pr82699-2.c
@@ -1,4 +1,5 @@
/* { dg-do compile { target *-*-linux* } } */
+/* { dg-require-effective-target mfentry } */
/* { dg-options "-O2 -fno-pic -fcf-protection -pg -mfentry
-fasynchronous-unwind-tables" } */
/* { dg-final { scan-assembler-times {\t\.cfi_startproc\n\tendbr} 1 } } */
diff --git a/gcc/testsuite/gcc.target/i386/pr82699-4.c
b/gcc/testsuite/gcc.target/i386/pr82699-4.c
index 3cc03db..719566b 100644
--- a/gcc/testsuite/gcc.target/i386/pr82699-4.c
+++ b/gcc/testsuite/gcc.target/i386/pr82699-4.c
@@ -1,4 +1,5 @@
/* { dg-do compile { target { *-*-linux* && { ! ia32 } } } } */
+/* { dg-require-effective-target mfentry } */
/* { dg-options "-O2 -fpic -fcf-protection -pg -mfentry
-fasynchronous-unwind-tables" } */
/* { dg-final { scan-assembler-times {\t\.cfi_startproc\n\tendbr} 1 } } */
diff --git a/gcc/testsuite/gcc.target/i386/pr82699-5.c
b/gcc/testsuite/gcc.target/i386/pr82699-5.c
index 0c547e2..ac3c1ae 100644
--- a/gcc/testsuite/gcc.target/i386/pr82699-5.c
+++ b/gcc/testsuite/gcc.target/i386/pr82699-5.c
@@ -1,4 +1,5 @@
/* { dg-do compile { target *-*-linux* } } */
+/* { dg-require-effective-target mfentry } */
/* { dg-options "-O2 -fcf-protection -mfentry -fasynchronous-unwind-tables" }
*/
/* { dg-additional-options "-fno-pic" { target ia32 } } */
/* { dg-final { scan-assembler-times {\t\.cfi_startproc\n\tendbr} 1 } } */
diff --git a/gcc/testsuite/gcc.target/i386/pr82699-6.c
b/gcc/testsuite/gcc.target/i386/pr82699-6.c
index ff6bae7..0b595f4 100644
--- a/gcc/testsuite/gcc.target/i386/pr82699-6.c
+++ b/gcc/testsuite/gcc.target/i386/pr82699-6.c
@@ -1,4 +1,5 @@
/* { dg-do compile { target *-*-linux* } } */
+/* { dg-require-effective-target mfentry } */
/* { dg-options "-fno-pic -O2 -fcf-protection -pg -mfentry -mrecord-mcount
-mnop-mcount -fasynchronous-unwind-tables" } */
/* { dg-final { scan-assembler-times {\t\.cfi_startproc\n\tendbr} 1 } } */
diff --git a/gcc/testsuite/gcc.target/i386/returninst1.c
b/gcc/testsuite/gcc.target/i386/returninst1.c
index d7ecc41..133fdee 100644
--- a/gcc/testsuite/gcc.target/i386/returninst1.c
+++ b/gcc/testsuite/gcc.target/i386/returninst1.c
@@ -1,4 +1,5 @@
/* { dg-do compile { target { ! ia32 } } } */
+/* { dg-require-effective-target mfentry } */
/* { dg-options "-pg -mfentry -minstrument-return=call -mrecord-return" } */
/* { dg-final { scan-assembler "call.*__return__" } } */
/* { dg-final { scan-assembler "section.*return_loc" } } */
diff --git a/gcc/testsuite/gcc.target/i386/returninst2.c
b/gcc/testsuite/gcc.target/i386/returninst2.c
index 4724b40..3629310 100644
--- a/gcc/testsuite/gcc.target/i386/returninst2.c
+++ b/gcc/testsuite/gcc.target/i386/returninst2.c
@@ -1,4 +1,5 @@
/* { dg-do compile { target { ! ia32 } } } */
+/* { dg-require-effective-target mfentry } */
/* { dg-options "-pg -mfentry -minstrument-return=nop5 -mrecord-return" } */
/* { dg-final { scan-assembler-times "0x0f, 0x1f, 0x44, 0x00, 0x00" 3 } } */
/* { dg-final { scan-assembler "section.*return_loc" } } */
diff --git a/gcc/testsuite/gcc.target/i386/returninst3.c
b/gcc/testsuite/gcc.target/i386/returninst3.c
index 14b4445..b84cc77 100644
--- a/gcc/testsuite/gcc.target/i386/returninst3.c
+++ b/gcc/testsuite/gcc.target/i386/returninst3.c
@@ -1,4 +1,5 @@
/* { dg-do compile { target { ! ia32 } } } */
+/* { dg-require-effective-target mfentry } */
/* { dg-options "-pg -mfentry -minstrument-return=call" } */
/* { dg-final { scan-assembler-not "call.*__return__" } } */
diff --git a/gcc/testsuite/lib/target-supports.exp
b/gcc/testsuite/lib/target-supports.exp
index 3bd6e81..a153366 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -9359,3 +9359,17 @@ proc check_effective_target_llvm_binutils { } {
expr { [istarget amdgcn*-*-*]
|| [check_effective_target_offload_gcn] }}]
}
+
+# Return 1 if the compiler supports '-mfentry'.
+
+proc check_effective_target_mfentry { } {
+ return [check_cached_effective_target mentry_available {
+ if { !([istarget i?86-*-*] || [istarget x86_64-*-*]) } {
+ return 0
+ } else {
+ return [check_no_compiler_messages mfentry object {
+ void foo (void) { }
+ } "-mfentry"]
+ }
+ }]
+}
