search for: floppy_probe

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Did you mean: l_floppy_probe
2015 Feb 20
3
[LLVMdev] clang .code16 with -Os producing larger code that it needs to
...tor), %ebx movl %ebx, 8(%si) clang: 7cbc: 67 66 8b 1d 5c 7c 00 addr32 mov 0x7c5c,%ebx 7cc3: 00 7cc4: 66 89 5c 08 mov %ebx,0x8(%si) gas: 7cbc: 66 8b 1e 5c 7c mov 0x7c5c,%ebx 7cc1: 66 89 5c 08 mov %ebx,0x8(%si) 32-bit jump. source: jnb LOCAL(floppy_probe) clang: + 7cb5: 66 0f 83 07 01 00 00 jae 7dc3 <L_floppy_probe> gas: - 7cb5: 0f 83 0a 01 jae 7dc3 <L_floppy_probe> The last one is particularly problematic as it never makes sense to issue 32-bit jump if %ip is only 16 bits and it eats 3 extra bytes per jump. Is it...