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Sign uprustc: Add --target-cpu flag to select a more specific processor instead of the default, 'generic'. #8410
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Features don't cover this? |
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luqmana
Aug 9, 2013
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@graydon No, they're separate.
llc -mattr=help gives me:
Available CPUs for this target:
amdfam10 - Select the amdfam10 processor.
athlon - Select the athlon processor.
athlon-4 - Select the athlon-4 processor.
athlon-fx - Select the athlon-fx processor.
athlon-mp - Select the athlon-mp processor.
athlon-tbird - Select the athlon-tbird processor.
athlon-xp - Select the athlon-xp processor.
athlon64 - Select the athlon64 processor.
athlon64-sse3 - Select the athlon64-sse3 processor.
atom - Select the atom processor.
bdver1 - Select the bdver1 processor.
bdver2 - Select the bdver2 processor.
btver1 - Select the btver1 processor.
btver2 - Select the btver2 processor.
c3 - Select the c3 processor.
c3-2 - Select the c3-2 processor.
core-avx-i - Select the core-avx-i processor.
core-avx2 - Select the core-avx2 processor.
core2 - Select the core2 processor.
corei7 - Select the corei7 processor.
corei7-avx - Select the corei7-avx processor.
generic - Select the generic processor.
geode - Select the geode processor.
i386 - Select the i386 processor.
i486 - Select the i486 processor.
i586 - Select the i586 processor.
i686 - Select the i686 processor.
k6 - Select the k6 processor.
k6-2 - Select the k6-2 processor.
k6-3 - Select the k6-3 processor.
k8 - Select the k8 processor.
k8-sse3 - Select the k8-sse3 processor.
knl - Select the knl processor.
nehalem - Select the nehalem processor.
nocona - Select the nocona processor.
opteron - Select the opteron processor.
opteron-sse3 - Select the opteron-sse3 processor.
penryn - Select the penryn processor.
pentium - Select the pentium processor.
pentium-m - Select the pentium-m processor.
pentium-mmx - Select the pentium-mmx processor.
pentium2 - Select the pentium2 processor.
pentium3 - Select the pentium3 processor.
pentium3m - Select the pentium3m processor.
pentium4 - Select the pentium4 processor.
pentium4m - Select the pentium4m processor.
pentiumpro - Select the pentiumpro processor.
prescott - Select the prescott processor.
westmere - Select the westmere processor.
winchip-c6 - Select the winchip-c6 processor.
winchip2 - Select the winchip2 processor.
x86-64 - Select the x86-64 processor.
yonah - Select the yonah processor.
Available features for this target:
3dnow - Enable 3DNow! instructions.
3dnowa - Enable 3DNow! Athlon instructions.
64bit - Support 64-bit instructions.
64bit-mode - 64-bit mode (x86_64).
adx - Support ADX instructions.
aes - Enable AES instructions.
atom - Intel Atom processors.
avx - Enable AVX instructions.
avx-512 - Enable AVX-512 instructions.
avx-512-cdi - Enable AVX-512 Conflict Detection Instructions.
avx-512-eri - Enable AVX-512 Exponential and Reciprocal Instructions.
avx-512-pfi - Enable AVX-512 PreFetch Instructions.
avx2 - Enable AVX2 instructions.
bmi - Support BMI instructions.
bmi2 - Support BMI2 instructions.
call-reg-indirect - Call register indirect.
cmov - Enable conditional move instructions.
cmpxchg16b - 64-bit with cmpxchg16b.
f16c - Support 16-bit floating point conversion instructions.
fast-unaligned-mem - Fast unaligned memory access.
fma - Enable three-operand fused multiple-add.
fma4 - Enable four-operand fused multiple-add.
fsgsbase - Support FS/GS Base instructions.
hle - Support HLE.
idiv-to-divb - Use small divide for positive values less than 256.
lea-sp - Use LEA for adjusting the stack pointer.
lea-uses-ag - LEA instruction needs inputs at AG stage.
lzcnt - Support LZCNT instruction.
mmx - Enable MMX instructions.
movbe - Support MOVBE instruction.
pad-short-functions - Pad short functions.
pclmul - Enable packed carry-less multiplication instructions.
popcnt - Support POPCNT instruction.
prfchw - Support PRFCHW instructions.
rdrand - Support RDRAND instruction.
rdseed - Support RDSEED instruction.
rtm - Support RTM instructions.
slow-bt-mem - Bit testing of memory is slow.
sse - Enable SSE instructions.
sse2 - Enable SSE2 instructions.
sse3 - Enable SSE3 instructions.
sse41 - Enable SSE 4.1 instructions.
sse42 - Enable SSE 4.2 instructions.
sse4a - Support SSE 4a instructions.
ssse3 - Enable SSSE3 instructions.
vector-unaligned-mem - Allow unaligned memory operands on vector/SIMD instructions.
xop - Enable XOP instructions.
Use +feature to enable a feature, or -feature to disable it.
For example, llc -mcpu=mycpu -mattr=+feature1,-feature2
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@graydon No, they're separate.
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@graydon: I think features correspond to |
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sanxiyn
commented on fcfd6e7
Aug 12, 2013
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r+ |
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saw approval from sanxiyn |
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merging luqmana/rust/mcpu = fcfd6e7 into auto |
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bors
Aug 12, 2013
Contributor
all tests pass:
success: http://buildbot.rust-lang.org/builders/auto-mac-32-opt/builds/875
success: http://buildbot.rust-lang.org/builders/auto-mac-64-opt/builds/878
success: http://buildbot.rust-lang.org/builders/auto-mac-64-nopt/builds/879
success: http://buildbot.rust-lang.org/builders/auto-mac-all-opt/builds/875
success: http://buildbot.rust-lang.org/builders/auto-linux-32-opt/builds/893
success: http://buildbot.rust-lang.org/builders/auto-linux-32-nopt/builds/895
success: http://buildbot.rust-lang.org/builders/auto-linux-64-opt/builds/893
success: http://buildbot.rust-lang.org/builders/auto-linux-64-nopt/builds/897
success: http://buildbot.rust-lang.org/builders/auto-linux-64-opt-vg/builds/902
success: http://buildbot.rust-lang.org/builders/auto-linux-64-x-android/builds/66
success: http://buildbot.rust-lang.org/builders/auto-linux-all-opt/builds/895
success: http://buildbot.rust-lang.org/builders/auto-win-32-opt/builds/878
success: http://buildbot.rust-lang.org/builders/auto-win-32-nopt/builds/892
success: http://buildbot.rust-lang.org/builders/auto-bsd-64-opt/builds/665
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fast-forwarding master to auto = 1785841 |
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Aug 12, 2013
bors
closed this
Aug 12, 2013
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luqmana commentedAug 9, 2013
Adds
--target-cpuflag which lets you choose a more specific target cpu instead of just passing the default,generic. It's more or less akin to-mcpu/-mtunein clang/gcc.