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Add defaut feature support

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This commit is contained in:
Layne Gustafson
2020-01-08 22:29:12 -05:00
committed by Andrew Kelley
parent 03dd376b55
commit fd17a9962b
5 changed files with 141 additions and 69 deletions
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21
src/codegen.cpp
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@@ -8781,8 +8781,9 @@ static void init(CodeGen *g) {
reloc_mode = LLVMRelocStatic;
}
const char *target_specific_cpu_args;
const char *target_specific_features;
const char *target_specific_cpu_args = "";
const char *target_specific_features = "";
if (g->zig_target->is_native) {
// LLVM creates invalid binaries on Windows sometimes.
// See https://github.com/ziglang/zig/issues/508
@@ -8794,22 +8795,6 @@ static void init(CodeGen *g) {
target_specific_cpu_args = ZigLLVMGetHostCPUName();
target_specific_features = ZigLLVMGetNativeFeatures();
}
} else if (target_is_riscv(g->zig_target)) {
// TODO https://github.com/ziglang/zig/issues/2883
// Be aware of https://github.com/ziglang/zig/issues/3275
target_specific_cpu_args = "";
target_specific_features = riscv_default_features;
} else if (g->zig_target->arch == ZigLLVM_x86) {
// This is because we're really targeting i686 rather than i386.
// It's pretty much impossible to use many of the language features
// such as fp16 if you stick use the x87 only. This is also what clang
// uses as base cpu.
// TODO https://github.com/ziglang/zig/issues/2883
target_specific_cpu_args = "pentium4";
target_specific_features = (g->zig_target->os == OsFreestanding) ? "-sse": "";
} else {
target_specific_cpu_args = "";
target_specific_features = "";
}
// Override CPU and features if defined by user.