On Tue, Sep 1, 2015 at 1:56 AM, Thomas Preud'homme
<thomas.preudho...@arm.com> wrote:
> grep -E '[cC]{2}[ "].*' ../edk2.log | grep -Ev " (-E|(-x assembler
> (-with-cpp)?)) " | grep -v -- "-fdump-tree-bswap" shows that all
> invocation of cc or gcc for compiling had a -fdump-tree-bswap in it.
> This confuses me because the only "found at" I could find in the bswap
> dumps are for:
>
> ./Build/Shell/RELEASE_ARMGCC/AARCH64/MdePkg/Library/BaseLib/BaseLib/OUTPUT/SwapBytes16.c.090t.bswap:16
> bit bswap implementation found at: _7 = _4 | _6;
> ./Build/ArmVirtualizationQemu-AARCH64/RELEASE_ARMGCC/AARCH64/MdePkg/Library/BaseLib/BaseLib/OUTPUT/SwapBytes16.c.090t.bswap:16
> bit bswap implementation found at: _7 = _4 | _6;
> ./Build/Fat/RELEASE_ARMGCC/AARCH64/MdePkg/Library/BaseLib/BaseLib/OUTPUT/SwapBytes16.c.090t.bswap:16
> bit bswap implementation found at: _7 = _4 | _6;
>
> All these conversion are fine and should have triggered with GCC 4.9 as
> well.
>
> Can you add -fdump-tree-bswap to CFLAGS in:
> BaseTools/Conf/tools_def.template
> BaseTools/Source/C/VfrCompile/Pccts/antlr/makefile
> BaseTools/Source/C/VfrCompile/Pccts/antlr/makefile.cygwin
> BaseTools/Source/C/VfrCompile/Pccts/dlg/makefile
> BaseTools/Source/C/VfrCompile/Pccts/dlg/makefile.cygwin
> BaseTools/Source/C/Makefiles/header.makefile
>
> and tell me the result of:
> find -name \*.bswap -exec grep -H "found at" {} \;
> ?
dannf@mustang:~/edk2-0~20150106.5c2d456b$ gcc --version
gcc (Ubuntu 5.2.1-15ubuntu2) 4.10.0 20140523 (experimental)
Copyright (C) 2014 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
dannf@mustang:~/edk2-0~20150106.5c2d456b$ find -name \*.bswap -exec
grep -H "found at" {} \;
./Build/ArmVirtualizationQemu-AARCH64/RELEASE_GCC49/AARCH64/MdePkg/Library/BaseLib/BaseLib/OUTPUT/SwapBytes16.c.091t.bswap:16
bit bswap implementation found at: _7 = _4 | _6;
./Build/Shell/RELEASE_GCC49/AARCH64/MdePkg/Library/BaseLib/BaseLib/OUTPUT/SwapBytes16.c.091t.bswap:16
bit bswap implementation found at: _7 = _4 | _6;
./Build/Fat/RELEASE_GCC49/AARCH64/MdePkg/Library/BaseLib/BaseLib/OUTPUT/SwapBytes16.c.091t.bswap:16
bit bswap implementation found at: _7 = _4 | _6;
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https://bugs.launchpad.net/bugs/1489560
Title:
qemu-efi: hangs in kvm mode when built w/ gcc-5
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