Backport 2 fixes from upstream

These patches are mandatory in order to test LLVM 19, e.g. when testing
the daily snapshots.

0001-gcc-c-torture-Disable-frame-address.c-test-due-to-in.patch

@@ -0,0 +1,87 @@
+From 259fcdabfd843d01fccd9a1aeb44642e9043a883 Mon Sep 17 00:00:00 2001
+From: David Spickett <david.spickett@linaro.org>
+Date: Wed, 15 Mar 2023 15:19:11 +0000
+Subject: [PATCH] [gcc-c-torture] Disable frame-address.c test due to incorrect
+ tail call prevention
+
+These checks were added to the original test by:
+https://github.com/gcc-mirror/gcc/commit/0f149d5215a22a03406a82ec1669bf65b329a4df
+
+Since 6b545db83c5a4e2c79e0b289e840be2c5fbbf327, clang has learned
+to see through this tail call prevention.
+
+First seen by us on our SVE bot which runs the test suite at -O3:
+https://lab.llvm.org/buildbot/#/builders/197/builds/4192
+
+Clang is correct here, this is why:
+```
+int check_fa_work (const char *c, const char *f)
+{
+  const char d = 0;
+
+  if (c >= &d)
+    return c >= f && f >= &d;
+  else
+    return c <= f && f <= &d;
+}
+```
+This function only ever returns 0 or 1 due to the `&&`.
+```
+int check_fa_mid (const char *c)
+{
+  const char *f = __builtin_frame_address (0);
+
+  /* Prevent a tail call to check_fa_work, eliding the current stack frame.  */
+  return check_fa_work (c, f) != 0;
+}
+```
+This function returns whether the result of check_fa_work is not equal to 0.
+
+Clang has realised that if check_fa_work returns 0, check_fa_mid does also.
+Same for 1. Meaning you can tail call check_fa_work.
+
+check_fa_work returns 0, 0 != 0 is False, so check_fa_mid returns 0
+check_fa_work returns 1, 1 != 0 is True, so check_fa_mid returns 1
+
+Giving you asm like:
+```
+check_fa_mid:                           // @check_fa_mid
+        stp     x29, x30, [sp, #-16]!           // 16-byte Folded Spill
+        mov     x29, sp
+        mov     x1, x29
+        ldp     x29, x30, [sp], #16             // 16-byte Folded Reload
+        b       check_fa_work
+```
+Which means we have one less frame and the test fails.
+
+A correct way to do it would be "==" which would have to invert the result.
+However we cannot modify the test files, so disable the test instead.
+
+I have filed a bug with gcc:
+https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109146
+
+Reviewed By: lenary
+
+Differential Revision: https://reviews.llvm.org/D146143
+---
+ .../Regression/C/gcc-c-torture/execute/CMakeLists.txt         | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/SingleSource/Regression/C/gcc-c-torture/execute/CMakeLists.txt b/SingleSource/Regression/C/gcc-c-torture/execute/CMakeLists.txt
+index acbc0798..630fa7e3 100644
+--- a/SingleSource/Regression/C/gcc-c-torture/execute/CMakeLists.txt
++++ b/SingleSource/Regression/C/gcc-c-torture/execute/CMakeLists.txt
+@@ -140,6 +140,10 @@ file(GLOB UnsupportedTests CONFIGURE_DEPENDS
+   # Size of array element is not a multiple of its alignment.
+   pr36093.c
+   pr43783.c
++
++  # Uses an incorrect method to prevent tailcalls which clang at -O1 or above
++  # can see through and tail call regardless.
++  frame-address.c
+ )
+ list(APPEND TestsToSkip ${UnsupportedTests})
+ 
+-- 
+2.44.0
+

0001-gcc-c-torture-use-fwrapv-for-950704-1.c-signed-overf.patch

@@ -0,0 +1,26 @@
+From d10245e73a71cee2beb737863ffe8f146f4d47e0 Mon Sep 17 00:00:00 2001
+From: antoine moynault <antoine.moynault@linaro.org>
+Date: Thu, 21 Dec 2023 16:41:50 +0100
+Subject: [PATCH] [gcc-c-torture] use -fwrapv for 950704-1.c (signed overflow)
+ (#70)
+
+test fails since #76044
+---
+ SingleSource/Regression/C/gcc-c-torture/execute/CMakeLists.txt | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/SingleSource/Regression/C/gcc-c-torture/execute/CMakeLists.txt b/SingleSource/Regression/C/gcc-c-torture/execute/CMakeLists.txt
+index 4788755c..03425811 100644
+--- a/SingleSource/Regression/C/gcc-c-torture/execute/CMakeLists.txt
++++ b/SingleSource/Regression/C/gcc-c-torture/execute/CMakeLists.txt
+@@ -181,6 +181,7 @@ file(GLOB TestRequiresFWrapV CONFIGURE_DEPENDS
+   20040409-1.c
+   20040409-2.c
+   20040409-3.c
++  950704-1.c
+ )
+ 
+ # Tests that require -Wno-return-type
+-- 
+2.44.0
+

llvm-test-suite.spec

@@ -6,7 +6,7 @@
 
 Name:		llvm-test-suite
 Version:	%{llvm_test_suite_version}%{?rc_ver:~rc%{rc_ver}}
-Release:	1%{?dist}
+Release:	2%{?dist}
 Summary:	C/C++ Compiler Test Suite
 
 License:	NCSA and BSD and GPLv1 and GPLv2+ and GPLv2 and MIT and Python and Public Domain and CRC32 and AML and Rdisc and ASL 2.0 and LGPLv3
@@ -28,6 +28,8 @@ Source2:	pkg_test_suite.sh
 BuildArch:	noarch
 
 Patch0: 0001-Fix-extra-Python3-print-statements.patch
+Patch1: 0001-gcc-c-torture-Disable-frame-address.c-test-due-to-in.patch
+Patch2: 0001-gcc-c-torture-use-fwrapv-for-950704-1.c-signed-overf.patch
 
 # We need python3-devel for pathfix.py.
 BuildRequires: python3-devel
@@ -82,6 +84,9 @@ cp -R %{_builddir}/%{test_suite_srcdir}/* %{buildroot}%{_datadir}/llvm-test-suit
 
 
 %changelog
+* Tue Apr 16 2024 Tulio Magno Quites Machado Filho <tuliom@redhat.com> - 16.0.6-2
+- Backport 2 fixes from upstream
+
 * Mon Jul 10 2023 Tulio Magno Quites Machado Filho <tuliom@redhat.com> - 16.0.6-1
 - Update to LLVM 16.0.6