(cherry picked from commit 94673d41)
(cherry picked from commit f13a2942)

This commit implements the config.cross field in the testsuite driver.
It comes from the "cross compiling" ghc info field for both
in-tree/out-of-tree GHC, and is an accurate predicate of whether we're
cross-compiling or not (compared to the precense of target emulator),
and is useful to implement predicates to assert the precense of
internal interpreter (only available on non-cross GHC) for tests that
do require it (e.g. plugins).

(cherry picked from commit 2956a3f7)
(cherry picked from commit 5500e1b3)

This commit bumps ci-image revision to use updated wasm toolchain, and
use host_fully_static instead of fully_static for wasm jobs so to
ensure wasm shared libraries can be properly built.

(cherry picked from commit 5043507c)
(cherry picked from commit 0ae9f0d5)

Matthew Pickering authored 9 months ago and Cheng Shao committed 6 months ago

alpine 3.20 was recently released and uses a new python and sphinx
toolchain which could be useful to test.

(cherry picked from commit 7bcda869)
(cherry picked from commit eac492c9)

This commit adds the host_fully_static flavour transformer to hadrian,
which ensures stage0 is fully statically linked while still permitting
stage1 libdir to contain shared libraries. This is intended to be used
by the wasm backend to build portable linux bindists that contain wasm
shared libraries.

(cherry picked from commit b45080a3)
(cherry picked from commit 91c0dbd4)

This commit disable the internal-interpreter flag of ghc library when
cross compiling, only external interpreter works in such cases.

(cherry picked from commit f232c872)
(cherry picked from commit 4e7d0cee)

This commit fixes conflicting StgRun definition when building dynamic
ways of RTS for wasm in unregisterised mode.

(cherry picked from commit bef94bde)
(cherry picked from commit 6f844296)

This commit wraps the predefined GlobalRegs in Wasm.S under a CPP
guard to prevent building for PIC mode. When building dynamic ways of
RTS, the wasm globals that represent STG GlobalRegs will be created
and supplied by dyld.mjs. The current wasm dylink convention doesn't
properly support exporting relocatable wasm globals at all, any wasm
global exported by a .so is assumed to be a GOT.mem entry.

(cherry picked from commit 98a32ec5)
(cherry picked from commit cc67ef51)

This commit drops interpretBCO support from non dynamic rts ways on
wasm. The bytecode interpreter is only useful when the RTS linker also
works, and on wasm it only works for dynamic ways anyway. An
additional benefit of dropping interpretBCO is reduction in code size
of linked wasm modules, especially since interpretBCO references
ffi_call which is an auto-generated large function in libffi-wasm and
unused by most user applications.

(cherry picked from commit 90a35c41)
(cherry picked from commit 7a16cf7c)

This patch avoids using mmap() to allocate executable memory for
mkConInfoTable on platforms without tables-next-to-code, see added
comment for explanation.

(cherry picked from commit 839ac52e)
(cherry picked from commit e54e3335)

This patch drops obsolete libffi Makefile from the tree, given it's
completely unused since removal of make build system in !7094.

(cherry picked from commit 3fe843c7)
(cherry picked from commit 81ddb1e7)

This patch removes the ghciWithDebugger field from flavour config
since it's actually not used anywhere.

(cherry picked from commit c6e5fd3d)
(cherry picked from commit 022d7565)

a.out is a configure script byproduct. It was mistakenly checked into
the tree in !13118. This patch removes it, and include it in
.gitignore to prevent a similar error in the future.

(cherry picked from commit f0408eeb)
(cherry picked from commit 8abb0f19)

This commit fixes isMinTTY.h casing in isMinTTY.c that's compiled for
Windows targets. While this looks harmless given Windows filesystems
are case-insensitive by default, it does cause a compilation warning
with recent versions of clang, so we might as well fix the casing:

```
driver\ghci\isMinTTY.c:10:10: error:
     warning: non-portable path to file '"isMinTTY.h"'; specified path differs in case from file name on disk [-Wnonportable-include-path]
   |
10 | #include "isMINTTY.h"
   |          ^

 #include "isMINTTY.h"
         ^~~~~~~~~~~~
         "isMinTTY.h"
1 warning generated.
```

(cherry picked from commit 3a145315)
(cherry picked from commit 7bcc3dc6)

This patch removes the -fasm flag from test ways, except ways like
optasm that explicitly state they are meant to be compiled with NCG
backend. Most test ways should use the default codegen backend, and
the precense of -fasm can cause stderr mismatches like this when GHC
is configured with the unregisterised backend:

```
--- /dev/null
+++ /tmp/ghctest-3hydwldj/test   spaces/testsuite/tests/profiling/should_compile/prof-late-cc.run/prof-late-cc.comp.stderr.normalised
@@ -0,0 +1,2 @@
+when making flags consistent: warning: [GHC-74335] [-Winconsistent-flags (in -Wdefault)]
+    Target platform uses unregisterised ABI, so compiling via C
*** unexpected failure for prof-late-cc(prof_no_auto)
```

This has been breaking the wasm unreg nightly job since !12595 landed.

(cherry picked from commit 88488847)
(cherry picked from commit f603ac9c)

(cherry picked from commit 64fba310)
(cherry picked from commit b35707a9)

This patch changes mblock size to page size on wasm. It allows us to
simplify our wasi-libc fork, makes it much easier to test third party
libc allocators like emmalloc/mimalloc, as well as experimenting with
threaded RTS in wasm.

(cherry picked from commit 558353f4)
(cherry picked from commit f3ea9fb8)

This patch removes pre-C11 legacy code paths related to
INLINE_HEADER/STATIC_INLINE/EXTERN_INLINE macros, ensure EXTERN_INLINE
is treated as static inline in most cases (fixes #24945), and also
corrects the comments accordingly.

(cherry picked from commit 35a64220)
(cherry picked from commit 241f401d)

objc-hi/objcxx-hi should be skipped when cross compiling. The existing
opsys('darwin') predicate only asserts the host system is darwin but
tells us nothing about the target, hence the oversight.

(cherry picked from commit 595c0894)
(cherry picked from commit 5273d3d0)

(cherry picked from commit 2eee65e1)
(cherry picked from commit 3f7b718f)

(cherry picked from commit ae50a8eb)
(cherry picked from commit b7e93bc9)

This patch makes hadrian build in-tree GMP with the
--enable-alloca=malloc-notreentrant configure option. We will only
need malloc-reentrant when we have threaded RTS and SMP support on
wasm32, which will take some time to happen, before which we should
use malloc-notreentrant to avoid undesired runtime overhead.

(cherry picked from commit 06277d56)
(cherry picked from commit 0f9a8aaf)

This patch disables in-tree GMP FFT code paths for wasm32 target in
order to give up some performance of multiplying very large operands
in exchange for reduced code size.

(cherry picked from commit 1a32f828)
(cherry picked from commit 097ea6e2)

This patch disables PIC for in-tree GMP on wasm32 target. Enabling PIC
unconditionally adds undesired code size and runtime overhead for
wasm32.

(cherry picked from commit f9c1ae12)
(cherry picked from commit 5f728fc4)

This patch fixes missing -ddump-cmm-raw output when compiling .cmm,
which is useful for debugging cmm related codegen issues.

(cherry picked from commit 6346c669)
(cherry picked from commit e5a1dd43)

hadrian may invoke findExecutable "" at run-time due to a certain
program is not found by configure script. Which is fine and
findExecutable is supposed to return Nothing in this case. However, on
Windows there's a directory bug that throws an exception (see
https://github.com/haskell/directory/issues/180), so we might as well
use a wrapper for findExecutable and handle exceptions gracefully.

(cherry picked from commit 1e5752f6)
(cherry picked from commit 78150bfc)

Add hie.yaml to ghc-config project directory so it can be edited using
HLS.

(cherry picked from commit 7eda4bd2)
(cherry picked from commit ed81a875)

This patch removes special consideration for ArchWasm32 in
cmmDoCmmSwitchPlans, which means the compiler will now disable
cmmImplementSwitchPlans for wasm unreg backend, just like unreg
backend of other targets. We enabled it in the past to workaround some
compile-time panic in older versions of LLVM, but those panics are no
longer present, hence no need to keep this workaround.

(cherry picked from commit bf0737c0)
(cherry picked from commit 8bd28cf2)

When -fsplit-sections is passed to GHC, pass -ffunction-sections
-fdata-sections to gcc/clang when building C/C++. Previously,
-fsplit-sections was only respected by the NCG/LLVM backends, but not
the unregisterised backend; the GHC driver did not pass
-fdata-sections and -ffunction-sections to the C compiler, which
resulted in excessive executable sizes.

Fixes #23381.

-------------------------
Metric Decrease:
    size_hello_artifact
    size_hello_unicode
-------------------------

(cherry picked from commit 02b1f91e)
(cherry picked from commit 74cdf564)

When split sections is enabled, ensure -fsplit-sections is passed to
GHC as well when invoking GHC to compile C/C++; and pass
-ffunction-sections -fdata-sections to gcc/clang when compiling C/C++
with the hadrian Cc builder. Fixes #23381.

(cherry picked from commit 0958937e)
(cherry picked from commit 7d5a22c2)

(cherry picked from commit e17f2df9)
(cherry picked from commit 9a2f3313)

This patch makes the STG->Cmm backend avoid saving foreign call target
to local when there are no caller-save GlobalRegs.

Since 321941a8, when we lower a
foreign call, we unconditionally save the foreign call target to a
temporary local first, then rely on cmmSink to clean it up later,
which only happens with -fcmm-sink (implied by -O) and not in
unoptimized code.

And this is troublesome for the wasm backend NCG, which needs to infer
a foreign call target symbol's type signature from the Cmm call site.
Previously, the NCG has been emitting incorrect type signatures for
unoptimized code, which happens to work with `wasm-ld` most of the
time, but this is never future-proof against upstream toolchain
updates, and it causes horrible breakages when LTO objects are
included in linker input. Hence this patch.

(cherry picked from commit 8dd8a076)
(cherry picked from commit 2b2a3db8)

The testsuite driver CPU feature detection logic only detects host CPU
and only makes sense when we are not testing a cross GHC.

(cherry picked from commit c4c6d714)
(cherry picked from commit 07641012)

(cherry picked from commit c739383b)
(cherry picked from commit f21a1e56)

T17920 was marked as fragile on wasm before; it can be trivially fixed
by avoiding calling variadic printf() in cmm.

(cherry picked from commit 7b4c1998)
(cherry picked from commit c4060ce3)

This patch removes redundant autoconf check for the context diff
program given it isn't actually been used anywhere, especially since
make removal.

(cherry picked from commit b7bcf729)
(cherry picked from commit 0e9d2a0f)

This patch fixes I/O manager compilation errors for win32 target
discovered when cross-compiling to win32 using recent clang:

```
rts/win32/ThrIOManager.c:117:7: error:
     error: call to undeclared function 'is_io_mng_native_p'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
      117 |   if (is_io_mng_native_p ()) {
          |       ^
    |
117 |   if (is_io_mng_native_p ()) {
    |       ^

1 error generated.
`x86_64-w64-mingw32-clang' failed in phase `C Compiler'. (Exit code: 1)

rts/fs.c:143:28: error:
     error: a function declaration without a prototype is deprecated in all versions of C [-Werror,-Wstrict-prototypes]
      143 | int setErrNoFromWin32Error () {
          |                            ^
          |                             void
    |
143 | int setErrNoFromWin32Error () {
    |                            ^

1 error generated.
`x86_64-w64-mingw32-clang' failed in phase `C Compiler'. (Exit code: 1)

rts/win32/ConsoleHandler.c:227:9: error:
     error: call to undeclared function 'interruptIOManagerEvent'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
      227 |         interruptIOManagerEvent ();
          |         ^
    |
227 |         interruptIOManagerEvent ();
    |         ^

rts/win32/ConsoleHandler.c:227:9: error:
     note: did you mean 'getIOManagerEvent'?
    |
227 |         interruptIOManagerEvent ();
    |         ^

rts/include/rts/IOInterface.h:27:10: error:
     note: 'getIOManagerEvent' declared here
       27 | void *   getIOManagerEvent  (void);
          |          ^
   |
27 | void *   getIOManagerEvent  (void);
   |          ^

1 error generated.
`x86_64-w64-mingw32-clang' failed in phase `C Compiler'. (Exit code: 1)

rts/win32/ConsoleHandler.c:196:9: error:
     error: call to undeclared function 'setThreadLabel'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
      196 |         setThreadLabel(cap, t, "signal handler thread");
          |         ^
    |
196 |         setThreadLabel(cap, t, "signal handler thread");
    |         ^

rts/win32/ConsoleHandler.c:196:9: error:
     note: did you mean 'postThreadLabel'?
    |
196 |         setThreadLabel(cap, t, "signal handler thread");
    |         ^

rts/eventlog/EventLog.h:118:6: error:
     note: 'postThreadLabel' declared here
      118 | void postThreadLabel(Capability    *cap,
          |      ^
    |
118 | void postThreadLabel(Capability    *cap,
    |      ^

1 error generated.
`x86_64-w64-mingw32-clang' failed in phase `C Compiler'. (Exit code: 1)
```

(cherry picked from commit 710665bd)
(cherry picked from commit 9499ed96)

(cherry picked from commit b1e0c313)
(cherry picked from commit 34882192)

(cherry picked from commit a580722e)
(cherry picked from commit 4f317bfd)

This commit removes obsolete deletection logic of the patch command
from autoconf scripts, given we no longer need to patch anything in
the GHC build process.

(cherry picked from commit 71f28958)
(cherry picked from commit 1e77ded1)