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stage2 register manager: clean up API and add more unit tests

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This commit is contained in:
joachimschmidt557
2021-05-14 17:09:11 +08:00
committed by Andrew Kelley
parent 5185b5619a
commit 8b4e91e18c
2 changed files with 228 additions and 165 deletions
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18
src/codegen.zig
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@@ -952,7 +952,7 @@ fn Function(comptime arch: std.Target.Cpu.Arch) type {
/// allocated. A second call to `copyToTmpRegister` may return the same register.
/// This can have a side effect of spilling instructions to the stack to free up a register.
fn copyToTmpRegister(self: *Self, src: LazySrcLoc, ty: Type, mcv: MCValue) !Register {
const reg = try self.register_manager.allocRegWithoutTracking(&.{});
const reg = try self.register_manager.allocReg(null, &.{});
try self.genSetReg(src, ty, reg, mcv);
return reg;
}
@@ -2228,7 +2228,7 @@ fn Function(comptime arch: std.Target.Cpu.Arch) type {
switch (mc_arg) {
.none => continue,
.register => |reg| {
try self.register_manager.getRegWithoutTracking(reg);
try self.register_manager.getReg(reg, null);
try self.genSetReg(arg.src, arg.ty, reg, arg_mcv);
},
.stack_offset => {
@@ -2370,7 +2370,7 @@ fn Function(comptime arch: std.Target.Cpu.Arch) type {
.compare_flags_signed => unreachable,
.compare_flags_unsigned => unreachable,
.register => |reg| {
try self.register_manager.getRegWithoutTracking(reg);
try self.register_manager.getReg(reg, null);
try self.genSetReg(arg.src, arg.ty, reg, arg_mcv);
},
.stack_offset => {
@@ -2433,7 +2433,7 @@ fn Function(comptime arch: std.Target.Cpu.Arch) type {
.compare_flags_signed => unreachable,
.compare_flags_unsigned => unreachable,
.register => |reg| {
try self.register_manager.getRegWithoutTracking(reg);
try self.register_manager.getReg(reg, null);
try self.genSetReg(arg.src, arg.ty, reg, arg_mcv);
},
.stack_offset => {
@@ -2486,7 +2486,7 @@ fn Function(comptime arch: std.Target.Cpu.Arch) type {
.register => |reg| {
// TODO prevent this macho if block to be generated for all archs
switch (arch) {
.x86_64, .aarch64 => try self.register_manager.getRegWithoutTracking(reg),
.x86_64, .aarch64 => try self.register_manager.getReg(reg, null),
else => unreachable,
}
try self.genSetReg(arg.src, arg.ty, reg, arg_mcv);
@@ -3190,7 +3190,7 @@ fn Function(comptime arch: std.Target.Cpu.Arch) type {
const arg = inst.args[i];
const arg_mcv = try self.resolveInst(arg);
try self.register_manager.getRegWithoutTracking(reg);
try self.register_manager.getReg(reg, null);
try self.genSetReg(inst.base.src, arg.ty, reg, arg_mcv);
}
@@ -3223,7 +3223,7 @@ fn Function(comptime arch: std.Target.Cpu.Arch) type {
const arg = inst.args[i];
const arg_mcv = try self.resolveInst(arg);
try self.register_manager.getRegWithoutTracking(reg);
try self.register_manager.getReg(reg, null);
try self.genSetReg(inst.base.src, arg.ty, reg, arg_mcv);
}
@@ -3258,7 +3258,7 @@ fn Function(comptime arch: std.Target.Cpu.Arch) type {
const arg = inst.args[i];
const arg_mcv = try self.resolveInst(arg);
try self.register_manager.getRegWithoutTracking(reg);
try self.register_manager.getReg(reg, null);
try self.genSetReg(inst.base.src, arg.ty, reg, arg_mcv);
}
@@ -3291,7 +3291,7 @@ fn Function(comptime arch: std.Target.Cpu.Arch) type {
const arg = inst.args[i];
const arg_mcv = try self.resolveInst(arg);
try self.register_manager.getRegWithoutTracking(reg);
try self.register_manager.getReg(reg, null);
try self.genSetReg(inst.base.src, arg.ty, reg, arg_mcv);
}