diff options
Diffstat (limited to 'clang/lib/Basic')
| -rw-r--r-- | clang/lib/Basic/Targets.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/clang/lib/Basic/Targets.cpp b/clang/lib/Basic/Targets.cpp index 64c7dbee3e8..e2b82718928 100644 --- a/clang/lib/Basic/Targets.cpp +++ b/clang/lib/Basic/Targets.cpp @@ -3997,6 +3997,7 @@ X86TargetInfo::validateAsmConstraint(const char *&Name, case 't': // Any SSE register, when SSE2 is enabled. case 'i': // Any SSE register, when SSE2 and inter-unit moves enabled. case 'm': // Any MMX register, when inter-unit moves enabled. + case 'k': // AVX512 arch mask registers: k1-k7. Info.setAllowsRegister(); return true; } @@ -4018,6 +4019,8 @@ X86TargetInfo::validateAsmConstraint(const char *&Name, case 'q': // Any register accessible as [r]l: a, b, c, and d. case 'y': // Any MMX register. case 'x': // Any SSE register. + case 'k': // Any AVX512 mask register (same as Yk, additionaly allows k0 + // for intermideate k reg operations). case 'Q': // Any register accessible as [r]h: a, b, c, and d. case 'R': // "Legacy" registers: ax, bx, cx, dx, di, si, sp, bp. case 'l': // "Index" registers: any general register that can be used as an @@ -4051,6 +4054,8 @@ bool X86TargetInfo::validateOperandSize(StringRef Constraint, unsigned Size) const { switch (Constraint[0]) { default: break; + case 'k': + // Registers k0-k7 (AVX512) size limit is 64 bit. case 'y': return Size <= 64; case 'f': @@ -4071,6 +4076,7 @@ bool X86TargetInfo::validateOperandSize(StringRef Constraint, default: break; case 'm': // 'Ym' is synonymous with 'y'. + case 'k': return Size <= 64; case 'i': case 't': @@ -4102,6 +4108,20 @@ X86TargetInfo::convertConstraint(const char *&Constraint) const { return std::string("{st}"); case 'u': // second from top of floating point stack. return std::string("{st(1)}"); // second from top of floating point stack. + case 'Y': + switch (Constraint[1]) { + default: + // Break from inner switch and fall through (copy single char), + // continue parsing after copying the current constraint into + // the return string. + break; + case 'k': + // "^" hints llvm that this is a 2 letter constraint. + // "Constraint++" is used to promote the string iterator + // to the next constraint. + return std::string("^") + std::string(Constraint++, 2); + } + LLVM_FALLTHROUGH; default: return std::string(1, *Constraint); } |
