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Only force SSE level if it is not correct.

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Add an assert to check HasX86_64 status.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63552 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Torok Edwin
2009-02-02 21:57:34 +00:00
parent 6748f044b2
commit b68a88bd48
1 changed files with 10 additions and 3 deletions
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13
lib/Target/X86/X86Subtarget.cpp
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@@ -322,16 +322,23 @@ X86Subtarget::X86Subtarget(const Module &M, const std::string &FS, bool is64Bit)
// If feature string is not empty, parse features string. // If feature string is not empty, parse features string.
std::string CPU = GetCurrentX86CPU(); std::string CPU = GetCurrentX86CPU();
ParseSubtargetFeatures(FS, CPU); ParseSubtargetFeatures(FS, CPU);
// All X86-64 CPUs also have SSE2, however user might request no SSE via
// -mattr, so don't force SSELevel here.
} else { } else {
// Otherwise, use CPUID to auto-detect feature set. // Otherwise, use CPUID to auto-detect feature set.
AutoDetectSubtargetFeatures(); AutoDetectSubtargetFeatures();
if (Is64Bit && X86SSELevel < SSE2) {
// Make sure SSE2 is enabled, it is available on all X86-64 CPUs.
X86SSELevel = SSE2;
}
} }
// If requesting codegen for X86-64, make sure that 64-bit and SSE2 features // If requesting codegen for X86-64, make sure that 64-bit features
// are enabled. These are available on all x86-64 CPUs. // are enabled.
if (Is64Bit) { if (Is64Bit) {
HasX86_64 = true; HasX86_64 = true;
} }
assert(!Is64Bit || HasX86_64);
DOUT << "Subtarget features: SSELevel " << X86SSELevel DOUT << "Subtarget features: SSELevel " << X86SSELevel
<< ", 3DNowLevel " << X863DNowLevel << ", 3DNowLevel " << X863DNowLevel
<< ", 64bit " << HasX86_64 << "\n"; << ", 64bit " << HasX86_64 << "\n";