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frontend/ir_emitter: Add half-precision variant of FPAbs

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Lioncash 2019-03-23 13:38:05 -04:00 • committed by MerryMage
parent 10abc77fad
commit 8309ec7a9f
4 changed files with 23 additions and 6 deletions
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14
src/backend/x64/emit_x64_floating_point.cpp
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@ -39,6 +39,7 @@ namespace {
const Xbyak::Reg64 INVALID_REG = Xbyak::Reg64(-1);
constexpr u64 f16_negative_zero = 0x8000;
constexpr u64 f16_non_sign_mask = 0x7fff;
constexpr u64 f32_negative_zero = 0x80000000u;
constexpr u64 f32_nan = 0x7fc00000u;
@ -325,9 +326,18 @@ void FPThreeOp(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst, Function fn)
} // anonymous namespace
void EmitX64::EmitFPAbs16(EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
const Xbyak::Xmm result = ctx.reg_alloc.UseScratchXmm(args[0]);
code.pand(result, code.MConst(xword, f16_non_sign_mask));
ctx.reg_alloc.DefineValue(inst, result);
}
void EmitX64::EmitFPAbs32(EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
Xbyak::Xmm result = ctx.reg_alloc.UseScratchXmm(args[0]);
const Xbyak::Xmm result = ctx.reg_alloc.UseScratchXmm(args[0]);
code.pand(result, code.MConst(xword, f32_non_sign_mask));
@ -336,7 +346,7 @@ void EmitX64::EmitFPAbs32(EmitContext& ctx, IR::Inst* inst) {
void EmitX64::EmitFPAbs64(EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
Xbyak::Xmm result = ctx.reg_alloc.UseScratchXmm(args[0]);
const Xbyak::Xmm result = ctx.reg_alloc.UseScratchXmm(args[0]);
code.pand(result, code.MConst(xword, f64_non_sign_mask));