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m_fixed: asm: cc is not a register

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gcc accepts

  __asm__ ( "" : : : "%cc");

but not clang:

    error: unknown register name '%cc' in asm
        :"%cc", "%edx"         // edx and condition codes clobbered

'cc' is not a register, thus '%cc' is rightfully not accepted.

Repro: build the project on x86_64 with:
    cmake -H. -Bbuild -DCMAKE_C_COMPILER=clang -DCMAKE_SIZEOF_VOID_P=4 -DCMAKE_C_FLAGS="-m32"
This commit is contained in:
Oleksii Vilchanskyi 2018-05-18 00:23:22 +02:00
parent 8e5ac64d7c
commit 6866dac171
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GPG key ID: E3D7F5AE7FA35AE5
1 changed files with 1 additions and 1 deletions
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src/m_fixed.h
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@ -75,7 +75,7 @@ typedef INT32 fixed_t;
:"=a" (ret) // eax is always the result and the first operand (%0,%1)
:"0" (a), "r" (b) // and %2 is what we use imull on with what in %1
, "I" (FRACBITS) // %3 holds FRACBITS (normally 16)
:"%cc", "%edx" // edx and condition codes clobbered
:"cc", "%edx" // edx and condition codes clobbered
);
return ret;
}