zig build fails on ppc64le / CPU = power8 Fedora Core 42

[matevy]

Zig Version

0.14.1

Steps to Reproduce and Observed Behavior

CMAKE_GENERATOR=Ninja ./build native-linux-gnu baseline
or
CMAKE_GENERATOR=Ninja ./build native-linux-gnu power8

[1/4] Building C object CMakeFiles/zig2.dir/zig2.c.o
FAILED: CMakeFiles/zig2.dir/zig2.c.o
/usr/sbin/cc -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/root/zig/zig-bootstrap/zig/stage1 -I/root/zig/zig-bootstrap/out/host/include -O3 -DNDEBUG -std=c99 -O0 -fno-stack-protector -MD -MT CMakeFiles/zig2.dir/zig2.c.o -MF CMakeFiles/zig2.dir/zig2.c.o.d -o CMakeFiles/zig2.dir/zig2.c.o -c /root/zig/zig-bootstrap/out/build-zig-host/zig2.c
/tmp/cctryZSi.s: Assembler messages:
/tmp/cctryZSi.s:10170593: Error: operand out of range (0xfffffffffdff0bc8 is not between 0xfffffffffe000000 and 0x1fffffc)
/tmp/cctryZSi.s:10170621: Error: operand out of range (0xfffffffffdff0b9c is not between 0xfffffffffe000000 and 0x1fffffc)
... similar lines ...

full log attached

zig-build-fail.txt

Expected Behavior

build

[alexrp]

@mikdusan this vaguely sounds like that one problem you had at some point?

[alexrp]

Right, yeah, it is. Here's the workaround from the Zulip discussion:

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ebdce53228..2ef97ec9b7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -821,7 +821,7 @@ if(MSVC)
 else()
   set(ZIG_WASM2C_COMPILE_FLAGS "-std=c99 -O2")
   set(ZIG1_COMPILE_FLAGS "-std=c99 -Os")
-  set(ZIG2_COMPILE_FLAGS "-std=c99 -O0 -fno-stack-protector")
+  set(ZIG2_COMPILE_FLAGS "-std=c99 -Os -fno-stack-protector")
   if(APPLE)
     set(ZIG2_LINK_FLAGS "-Wl,-stack_size,0x10000000")
   elseif(MINGW)

Looks like we never figured out why it happened.

[matevy]

Hi,

thanks, yes that helped. But unfortunately it crashed later when building stage3. Have you seen something like that as well?

/root/zig-bootstrap/out/build-zig-host/zig2 build --prefix /root/zig-bootstrap/out/build-zig-host/stage3 --zig-lib-dir /root/zig-bootstrap/zig/lib -Dversion-string=0.14.0 -Dtarget=native -Dcpu=native -Denable-llvm -Dconfig_h=/root/zig-bootstrap/out/build-zig-host/config.h -Dno-langref -Doptimize=ReleaseFast -Dstrip
[2] Compile Build Script
Segmentation fault (core dumped)

Core was generated by `/root/zig-bootstrap/out/build-zig-host/zig2 build --prefix /root/zig-bootstrap/out/build-zig-host/stage3 --zig-lib-dir /root/zig-bootstrap/zig/lib -Dversion-string=0.14.0 -Dtarget=native -Dcpu=native -Denable-llvm -Dconfig_h=/root/zig-bootstrap/out/build-zig-host/config.h -Dno-langref -Doptimize=ReleaseFast -Dstrip'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x000000001881a338 in (anonymous namespace)::ConstantFoldScalarCall1(llvm::StringRef, unsigned int, llvm::Type*, llvm::ArrayRefllvm::Constant*, llvm::TargetLibraryInfo const*, llvm::CallBase const*) [clone .isra.0] ()
[Current thread is 1 (Thread 0x750bbedbeca0 (LWP 155655))]
(gdb) backtrace
#0 0x000000001881a338 in (anonymous namespace)::ConstantFoldScalarCall1(llvm::StringRef, unsigned int, llvm::Type*, llvm::ArrayRefllvm::Constant*, llvm::TargetLibraryInfo const*, llvm::CallBase const*) [clone .isra.0] ()
#1 0x00000000188f01b0 in (anonymous namespace)::CallAnalyzer::visitCallBase(llvm::CallBase&) ()
#2 0x00000000188f489c in (anonymous namespace)::CallAnalyzer::analyze() [clone .part.0] ()
#3 0x00000000188f60ec in llvm::getInlineCost(llvm::CallBase&, llvm::Function*, llvm::InlineParams const&, llvm::TargetTransformInfo&, llvm::function_ref<llvm::AssumptionCache& (llvm::Function&)>, llvm::function_ref<llvm::TargetLibraryInfo const& (llvm::Function&)>, llvm::function_ref<llvm::BlockFrequencyInfo& (llvm::Function&)>, llvm::ProfileSummaryInfo*, llvm::OptimizationRemarkEmitter*) ()
#4 0x00000000188f656c in llvm::getInlineCost(llvm::CallBase&, llvm::InlineParams const&, llvm::TargetTransformInfo&, llvm::function_ref<llvm::AssumptionCache& (llvm::Function&)>, llvm::function_ref<llvm::TargetLibraryInfo const& (llvm::Function&)>, llvm::function_ref<llvm::BlockFrequencyInfo& (llvm::Function&)>, llvm::ProfileSummaryInfo*, llvm::OptimizationRemarkEmitter*) ()
#5 0x00000000188f9878 in llvm::InlineCost llvm::function_ref<llvm::InlineCost (llvm::CallBase&)>::callback_fn<getDefaultInlineAdvice(llvm::CallBase&, llvm::AnalysisManagerllvm::Function&, llvm::InlineParams const&)::{lambda(llvm::CallBase&)#1}>(long, llvm::CallBase&) ()
#6 0x00000000188ff200 in llvm::shouldInline(llvm::CallBase&, llvm::function_ref<llvm::InlineCost (llvm::CallBase&)>, llvm::OptimizationRemarkEmitter&, bool) ()
#7 0x0000000018900678 in getDefaultInlineAdvice(llvm::CallBase&, llvm::AnalysisManagerllvm::Function&, llvm::InlineParams const&) ()
#8 0x00000000189006fc in llvm::DefaultInlineAdvisor::getAdviceImpl(llvm::CallBase&) ()
#9 0x0000000018900ad8 in llvm::InlineAdvisor::getAdvice(llvm::CallBase&, bool) ()
#10 0x0000000016b22e80 in llvm::InlinerPass::run(llvm::LazyCallGraph::SCC&, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&) ()
#11 0x0000000016828df4 in llvm::detail::PassModel<llvm::LazyCallGraph::SCC, llvm::InlinerPass, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>::run(llvm::LazyCallGraph::SCC&, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&) ()
#12 0x00000000187f04f8 in llvm::PassManager<llvm::LazyCallGraph::SCC, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>::run(llvm::LazyCallGraph::SCC&, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&) ()
#13 0x0000000016826024 in llvm::detail::PassModel<llvm::LazyCallGraph::SCC, llvm::PassManager<llvm::LazyCallGraph::SCC, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>::run(llvm::LazyCallGraph::SCC&, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&) ()
#14 0x00000000187f9974 in llvm::DevirtSCCRepeatedPass::run(llvm::LazyCallGraph::SCC&, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&) ()
#15 0x0000000016826074 in llvm::detail::PassModel<llvm::LazyCallGraph::SCC, llvm::DevirtSCCRepeatedPass, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>::run(llvm::LazyCallGraph::SCC&, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&) ()
#16 0x00000000187f2cec in llvm::ModuleToPostOrderCGSCCPassAdaptor::run(llvm::Module&, llvm::AnalysisManagerllvm::Module&) ()
#17 0x0000000016825fd4 in llvm::detail::PassModel<llvm::Module, llvm::ModuleToPostOrderCGSCCPassAdaptor, llvm::AnalysisManagerllvm::Module>::run(llvm::Module&, llvm::AnalysisManagerllvm::Module&) ()
#18 0x00000000194b7a2c in llvm::PassManager<llvm::Module, llvm::AnalysisManagerllvm::Module>::run(llvm::Module&, llvm::AnalysisManagerllvm::Module&)
()
#19 0x0000000016b20e84 in llvm::ModuleInlinerWrapperPass::run(llvm::Module&, llvm::AnalysisManagerllvm::Module&) ()
#20 0x0000000016825464 in llvm::detail::PassModel<llvm::Module, llvm::ModuleInlinerWrapperPass, llvm::AnalysisManagerllvm::Module>::run(llvm::Module&, ll--Type for more, q to quit, c to continue without paging--
vm::AnalysisManagerllvm::Module&) ()
#21 0x00000000194b7a2c in llvm::PassManager<llvm::Module, llvm::AnalysisManagerllvm::Module>::run(llvm::Module&, llvm::AnalysisManagerllvm::Module&)
()
#22 0x0000000010aa3cc8 in ZigLLVMTargetMachineEmitToFile ()
#23 0x00000000108fcd24 in codegen_llvm_Object_emit__12033 ()
#24 0x00000000108fd19c in Compilation_emitLlvmObject__5409.constprop.0.isra.0 ()
#25 0x0000000010a45b98 in link_Elf_flushModule__5126.constprop.0 ()
#26 0x0000000010a4a698 in link_File_flush__5060.constprop.0 ()
#27 0x0000000010a4ba5c in Compilation_flush__5402.constprop.0 ()
#28 0x0000000010a62470 in Compilation_update__5400 ()
#29 0x0000000010a6252c in Compilation_updateSubCompilation__5494 ()
#30 0x0000000010a632dc in Compilation_buildOutputFromZig__5495 ()
#31 0x0000000010a63430 in Compilation_buildRt__5447 ()
#32 0x0000000010a63a10 in Thread_WaitGroup_spawnManager__anon_95787_Manager_run__69061.isra.0 ()
#33 0x0000000010a63a80 in Thread_PosixThreadImpl_spawn__anon_184830_Instance_entryFn__83838 ()
#34 0x0000750c603862e0 in start_thread (arg=0x750bbedbeca0) at pthread_create.c:448
#35 0x0000750c604328b8 in __GI___clone3 () at ../sysdeps/unix/sysv/linux/powerpc/powerpc64/clone3.S:114

[mikdusan]

Right, yeah, it is. Here's the workaround from the Zulip discussion:

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ebdce53228..2ef97ec9b7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -821,7 +821,7 @@ if(MSVC)
else()
set(ZIG_WASM2C_COMPILE_FLAGS "-std=c99 -O2")
set(ZIG1_COMPILE_FLAGS "-std=c99 -Os")

• set(ZIG2_COMPILE_FLAGS "-std=c99 -O0 -fno-stack-protector")

• set(ZIG2_COMPILE_FLAGS "-std=c99 -Os -fno-stack-protector")
  if(APPLE)
  set(ZIG2_LINK_FLAGS "-Wl,-stack_size,0x10000000")
  elseif(MINGW)
  Looks like we never figured out why it happened.

Yup -Os was how I worked around it. I just assumed the cause was a compiler backend not selecting instructions that take larger operands, or if the diagnostic is accurate, it's outside of a legal address range? There are some gcc ppc options that I never got around trying; perhaps -mavoid-indexed-addresses or the infamous -mcmodel=large because you know, medium seems to be in style :(

[mikdusan]

Hi,

thanks, yes that helped. But unfortunately it crashed later when building stage3. Have you seen something like that as well?

@matevy,

Unlikely, but what is stacksize for your env? Try giving at least 32 MiB stack to stage2 execution.