Use std::bitset for SubtargetFeatures
Previously, subtarget features were a bitfield with the underlying type being uint64_t.
Since several targets (X86 and ARM, in particular) have hit or were very close to hitting this bound, switching the features to use a bitset.
No functional change.
The first time this was committed (r229831), it caused several buildbot failures.
At least some of the ARM ones were due to gcc/binutils issues, and should now be fixed.
Differential Revision: http://reviews.llvm.org/D8542
llvm-svn: 233055
diff --git a/llvm/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp b/llvm/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp
index e6d2967..a832698 100644
--- a/llvm/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp
+++ b/llvm/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp
@@ -382,7 +382,7 @@
? true
: false;
- uint64_t Features = STI.getFeatureBits();
+ const FeatureBitset &Features = STI.getFeatureBits();
// Set the header flags that we can in the constructor.
// FIXME: This is a fairly terrible hack. We set the rest
@@ -398,35 +398,35 @@
unsigned EFlags = MCA.getELFHeaderEFlags();
// Architecture
- if (Features & Mips::FeatureMips64r6)
+ if (Features[Mips::FeatureMips64r6])
EFlags |= ELF::EF_MIPS_ARCH_64R6;
- else if (Features & Mips::FeatureMips64r2 ||
- Features & Mips::FeatureMips64r3 ||
- Features & Mips::FeatureMips64r5)
+ else if (Features[Mips::FeatureMips64r2] ||
+ Features[Mips::FeatureMips64r3] ||
+ Features[Mips::FeatureMips64r5])
EFlags |= ELF::EF_MIPS_ARCH_64R2;
- else if (Features & Mips::FeatureMips64)
+ else if (Features[Mips::FeatureMips64])
EFlags |= ELF::EF_MIPS_ARCH_64;
- else if (Features & Mips::FeatureMips5)
+ else if (Features[Mips::FeatureMips5])
EFlags |= ELF::EF_MIPS_ARCH_5;
- else if (Features & Mips::FeatureMips4)
+ else if (Features[Mips::FeatureMips4])
EFlags |= ELF::EF_MIPS_ARCH_4;
- else if (Features & Mips::FeatureMips3)
+ else if (Features[Mips::FeatureMips3])
EFlags |= ELF::EF_MIPS_ARCH_3;
- else if (Features & Mips::FeatureMips32r6)
+ else if (Features[Mips::FeatureMips32r6])
EFlags |= ELF::EF_MIPS_ARCH_32R6;
- else if (Features & Mips::FeatureMips32r2 ||
- Features & Mips::FeatureMips32r3 ||
- Features & Mips::FeatureMips32r5)
+ else if (Features[Mips::FeatureMips32r2] ||
+ Features[Mips::FeatureMips32r3] ||
+ Features[Mips::FeatureMips32r5])
EFlags |= ELF::EF_MIPS_ARCH_32R2;
- else if (Features & Mips::FeatureMips32)
+ else if (Features[Mips::FeatureMips32])
EFlags |= ELF::EF_MIPS_ARCH_32;
- else if (Features & Mips::FeatureMips2)
+ else if (Features[Mips::FeatureMips2])
EFlags |= ELF::EF_MIPS_ARCH_2;
else
EFlags |= ELF::EF_MIPS_ARCH_1;
// Other options.
- if (Features & Mips::FeatureNaN2008)
+ if (Features[Mips::FeatureNaN2008])
EFlags |= ELF::EF_MIPS_NAN2008;
// -mabicalls and -mplt are not implemented but we should act as if they were
@@ -466,7 +466,7 @@
DataSectionData.setAlignment(std::max(16u, DataSectionData.getAlignment()));
BSSSectionData.setAlignment(std::max(16u, BSSSectionData.getAlignment()));
- uint64_t Features = STI.getFeatureBits();
+ const FeatureBitset &Features = STI.getFeatureBits();
// Update e_header flags. See the FIXME and comment above in
// the constructor for a full rundown on this.
@@ -479,10 +479,10 @@
else if (getABI().IsN32())
EFlags |= ELF::EF_MIPS_ABI2;
- if (Features & Mips::FeatureGP64Bit) {
+ if (Features[Mips::FeatureGP64Bit]) {
if (getABI().IsO32())
EFlags |= ELF::EF_MIPS_32BITMODE; /* Compatibility Mode */
- } else if (Features & Mips::FeatureMips64r2 || Features & Mips::FeatureMips64)
+ } else if (Features[Mips::FeatureMips64r2] || Features[Mips::FeatureMips64])
EFlags |= ELF::EF_MIPS_32BITMODE;
// If we've set the cpic eflag and we're n64, go ahead and set the pic