[clang] [llvm] [CMAKE] Enable FatLTO as a build option for LLVM (PR #80480)

https://github.com/ilovepi closed https://github.com/llvm/llvm-project/pull/80480 ___ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits

[clang] [llvm] [CMAKE] Enable FatLTO as a build option for LLVM (PR #80480)

https://github.com/ilovepi updated https://github.com/llvm/llvm-project/pull/80480 >From c0f09d9efd3836a83e72c329d17b32f7a87764b7 Mon Sep 17 00:00:00 2001 From: Paul Kirth Date: Tue, 22 Aug 2023 15:24:03 + Subject: [PATCH 1/4] [CMAKE] Enable FatLTO as a build option for LLVM ---

[clang] [llvm] [CMAKE] Enable FatLTO as a build option for LLVM (PR #80480)

ilovepi wrote: Not sure what I've managed to do here w/ basic rebase ... Will remove unrelated folks and triage the commits https://github.com/llvm/llvm-project/pull/80480 ___ cfe-commits mailing list cfe-commits@lists.llvm.org

[clang] [llvm] [CMAKE] Enable FatLTO as a build option for LLVM (PR #80480)

https://github.com/ilovepi updated https://github.com/llvm/llvm-project/pull/80480 >From 043e8a33f10905d456e42b71801f0ab1b24a8b36 Mon Sep 17 00:00:00 2001 From: Paul Kirth Date: Tue, 22 Aug 2023 15:24:03 + Subject: [PATCH 1/6] [CMAKE] Enable FatLTO as a build option for LLVM ---

[clang] [llvm] [CMAKE] Enable FatLTO as a build option for LLVM (PR #80480)

https://github.com/petrhosek approved this pull request. https://github.com/llvm/llvm-project/pull/80480 ___ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits

[clang] [llvm] [CMAKE] Enable FatLTO as a build option for LLVM (PR #80480)

@@ -1621,8 +1621,15 @@ function(add_unittest test_suite test_name) # The runtime benefits of LTO don't outweight the compile time costs for tests. if(LLVM_ENABLE_LTO) if((UNIX OR MINGW) AND LINKER_IS_LLD) - set_property(TARGET ${test_name} APPEND_STRING PROPERTY

[clang] [llvm] [CMAKE] Enable FatLTO as a build option for LLVM (PR #80480)

@@ -1251,6 +1253,10 @@ elseif(LLVM_ENABLE_LTO) endif() endif() +if(LLVM_ENABLE_FATLTO AND (FUCHSIA OR UNIX)) +append("-ffat-lto-objects" CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS) ilovepi wrote: done. Thanks for the suggestion.

[clang] [llvm] [CMAKE] Enable FatLTO as a build option for LLVM (PR #80480)

https://github.com/ilovepi updated https://github.com/llvm/llvm-project/pull/80480 >From 1946ea0be5b87da44e05a5e668e383c3c463cdd7 Mon Sep 17 00:00:00 2001 From: Paul Kirth Date: Tue, 22 Aug 2023 15:24:03 + Subject: [PATCH 1/3] [CMAKE] Enable FatLTO as a build option for LLVM ---

[clang] [llvm] [CMAKE] Enable FatLTO as a build option for LLVM (PR #80480)

@@ -1621,8 +1621,15 @@ function(add_unittest test_suite test_name) # The runtime benefits of LTO don't outweight the compile time costs for tests. if(LLVM_ENABLE_LTO) if((UNIX OR MINGW) AND LINKER_IS_LLD) - set_property(TARGET ${test_name} APPEND_STRING PROPERTY

[clang] [llvm] [CMAKE] Enable FatLTO as a build option for LLVM (PR #80480)

@@ -1621,8 +1621,15 @@ function(add_unittest test_suite test_name) # The runtime benefits of LTO don't outweight the compile time costs for tests. if(LLVM_ENABLE_LTO) if((UNIX OR MINGW) AND LINKER_IS_LLD) - set_property(TARGET ${test_name} APPEND_STRING PROPERTY

[clang] [llvm] [CMAKE] Enable FatLTO as a build option for LLVM (PR #80480)

@@ -1251,6 +1253,10 @@ elseif(LLVM_ENABLE_LTO) endif() endif() +if(LLVM_ENABLE_FATLTO AND (FUCHSIA OR UNIX)) +append("-ffat-lto-objects" CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS) petrhosek wrote: I'd also include the flag in

[clang] [llvm] [CMAKE] Enable FatLTO as a build option for LLVM (PR #80480)

https://github.com/ilovepi updated https://github.com/llvm/llvm-project/pull/80480 >From 0c010db4bdf8808d95895db1ba4112fcb04f2d8b Mon Sep 17 00:00:00 2001 From: Paul Kirth Date: Tue, 22 Aug 2023 15:24:03 + Subject: [PATCH 1/2] [CMAKE] Enable FatLTO as a build option for LLVM ---

[clang] [llvm] [CMAKE] Enable FatLTO as a build option for LLVM (PR #80480)

https://github.com/ilovepi updated https://github.com/llvm/llvm-project/pull/80480 >From 0c010db4bdf8808d95895db1ba4112fcb04f2d8b Mon Sep 17 00:00:00 2001 From: Paul Kirth Date: Tue, 22 Aug 2023 15:24:03 + Subject: [PATCH 1/2] [CMAKE] Enable FatLTO as a build option for LLVM ---

[clang] [llvm] [CMAKE] Enable FatLTO as a build option for LLVM (PR #80480)

https://github.com/SLTozer updated https://github.com/llvm/llvm-project/pull/80480 >From 4d280199a9eb027127bdc9c31a266fa3e2fa6cea Mon Sep 17 00:00:00 2001 From: Paul Kirth Date: Tue, 22 Aug 2023 15:24:03 + Subject: [PATCH 1/2] [CMAKE] Enable FatLTO as a build option for LLVM ---

[clang] [llvm] [CMAKE] Enable FatLTO as a build option for LLVM (PR #80480)

https://github.com/ilovepi updated https://github.com/llvm/llvm-project/pull/80480 >From 4d280199a9eb027127bdc9c31a266fa3e2fa6cea Mon Sep 17 00:00:00 2001 From: Paul Kirth Date: Tue, 22 Aug 2023 15:24:03 + Subject: [PATCH 1/2] [CMAKE] Enable FatLTO as a build option for LLVM ---

[clang] [llvm] [CMAKE] Enable FatLTO as a build option for LLVM (PR #80480)

ilovepi wrote: I'm keeping this as a draft until I confirm the cmake config works as expected, especially in 2 stage builds. https://github.com/llvm/llvm-project/pull/80480 ___ cfe-commits mailing list cfe-commits@lists.llvm.org

[clang] [llvm] [CMAKE] Enable FatLTO as a build option for LLVM (PR #80480)

https://github.com/ilovepi created https://github.com/llvm/llvm-project/pull/80480 Since LLVM supports `-ffat-lto-objects` we should enable this as an option in the LLVM build. FatLTO should improve the time it takes to build tests for LTO enabled builds of the compiler by not linking w/ the