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| author | Renato Golin <renato.golin@linaro.org> | 2013-03-21 18:47:47 +0000 |
|---|---|---|
| committer | Renato Golin <renato.golin@linaro.org> | 2013-03-21 18:47:47 +0000 |
| commit | 3382a840747c42c4a98eac802ee7b347a8ded1e4 (patch) | |
| tree | de4c0a5050772a0b2c7d3b0f1e771814d0f24fe9 /lib/Target/ARM/ARM.td | |
| parent | b55b00b4d4b79daec2be43a2a6cd0f5891370296 (diff) | |
| download | llvm-3382a840747c42c4a98eac802ee7b347a8ded1e4.tar.gz llvm-3382a840747c42c4a98eac802ee7b347a8ded1e4.tar.bz2 llvm-3382a840747c42c4a98eac802ee7b347a8ded1e4.tar.xz | |
Avoid NEON SP-FP unless unsafe-math or Darwin
NEON is not IEEE 754 compliant, so we should avoid lowering single-precision
floating point operations with NEON unless unsafe-math is turned on. The
equivalent VFP instructions are IEEE 754 compliant, but in some cores they're
much slower, so some archs/OSs might still request it to be on by default,
such as Swift and Darwin.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177651 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/ARM/ARM.td')
| -rw-r--r-- | lib/Target/ARM/ARM.td | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/lib/Target/ARM/ARM.td b/lib/Target/ARM/ARM.td index 46915eecf6..68380847a0 100644 --- a/lib/Target/ARM/ARM.td +++ b/lib/Target/ARM/ARM.td @@ -143,14 +143,12 @@ include "ARMSchedule.td" // ARM processor families. def ProcA5 : SubtargetFeature<"a5", "ARMProcFamily", "CortexA5", "Cortex-A5 ARM processors", - [FeatureSlowFPBrcc, FeatureNEONForFP, - FeatureHasSlowFPVMLx, FeatureVMLxForwarding, - FeatureT2XtPk]>; + [FeatureSlowFPBrcc, FeatureHasSlowFPVMLx, + FeatureVMLxForwarding, FeatureT2XtPk]>; def ProcA8 : SubtargetFeature<"a8", "ARMProcFamily", "CortexA8", "Cortex-A8 ARM processors", - [FeatureSlowFPBrcc, FeatureNEONForFP, - FeatureHasSlowFPVMLx, FeatureVMLxForwarding, - FeatureT2XtPk]>; + [FeatureSlowFPBrcc, FeatureHasSlowFPVMLx, + FeatureVMLxForwarding, FeatureT2XtPk]>; def ProcA9 : SubtargetFeature<"a9", "ARMProcFamily", "CortexA9", "Cortex-A9 ARM processors", [FeatureVMLxForwarding, |