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https://github.com/microsoft/vcpkg.git
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e95a7a8dc0
* [vcpkg] allow to use semicolons in COMMAND argument * [llvm] update to 11.0.0 * [vcpkg] use latest version * [vcpkg] allow to use semicolons in OPTIONS * fix vcpkg_fixup_cmake_targets * [llvm] fix more install paths, add /bigobj option, fix up CMake targets * Apply suggestions from code review * [llvm] fix clang, flang, lld, mlir and polly CMake targets * [llvm] remove empty include directory /include/flang/Config * [llvm] Flang requires C++17 * [llvm] add /Zc:__cplusplus * [llvm] remove empty include directory include/clang-tidy/plugin * [llvm] try to fix ClangConfig.cmake, LLVMConfig.cmake, LLDConfig.cmake etc. with patch * [llvm] set tools install dir to tools/llvm * [aws-sdk-cpp] fix build after changes in vcpkg_configure_cmake.cmake * [llvm] disable Flang and OpenMP on Windows Co-authored-by: Nicole Mazzuca <mazzucan@outlook.com>
40 lines
1.7 KiB
Diff
40 lines
1.7 KiB
Diff
diff --git a/llvm/lib/CodeGen/GlobalISel/LegalityPredicates.cpp b/llvm/lib/CodeGen/GlobalISel/LegalityPredicates.cpp
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--- a/llvm/lib/CodeGen/GlobalISel/LegalityPredicates.cpp
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+++ b/llvm/lib/CodeGen/GlobalISel/LegalityPredicates.cpp
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@@ -10,6 +10,17 @@
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//
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//===----------------------------------------------------------------------===//
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+// Disable optimizations to work around MSVC debug mode bug in 32-bit:
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+// https://developercommunity.visualstudio.com/content/problem/1179643/msvc-copies-overaligned-non-trivially-copyable-par.html
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+// FIXME: Remove this when the issue is closed.
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+#if defined(_MSC_VER) && !defined(__clang__) && defined(_M_IX86)
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+// We have to disable runtime checks in order to enable optimizations. This is
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+// done for the entire file because the problem is actually observed in STL
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+// template functions.
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+#pragma runtime_checks("", off)
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+#pragma optimize("gs", on)
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+#endif
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+
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#include "llvm/CodeGen/GlobalISel/LegalizerInfo.h"
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using namespace llvm;
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diff --git a/llvm/unittests/CodeGen/GlobalISel/LegalizerInfoTest.cpp b/llvm/unittests/CodeGen/GlobalISel/LegalizerInfoTest.cpp
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--- a/llvm/unittests/CodeGen/GlobalISel/LegalizerInfoTest.cpp
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+++ b/llvm/unittests/CodeGen/GlobalISel/LegalizerInfoTest.cpp
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@@ -406,3 +406,13 @@
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32, 8, AtomicOrdering::NotAtomic }));
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}
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}
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+
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+// This code sequence doesn't do anything, but it covers a previously uncovered
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+// codepath that used to crash in MSVC x86_32 debug mode.
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+TEST(LegalizerInfoTest, MSVCDebugMiscompile) {
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+ const LLT S1 = LLT::scalar(1);
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+ const LLT P0 = LLT::pointer(0, 32);
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+ LegalizerInfo LI;
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+ auto Builder = LI.getActionDefinitionsBuilder(TargetOpcode::G_PTRTOINT);
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+ (void)Builder.legalForCartesianProduct({S1}, {P0});
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+}
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