From bdb917006c9920f2a0d2091cb0f3d52454e039f0 Mon Sep 17 00:00:00 2001
From: joachimschmidt557 <joachim.schmidt557@outlook.com>
Date: Sun, 7 Mar 2021 00:25:21 +0100
Subject: stage2 tzir: Add wrapping integer arithmetic instructions

---
 src/codegen.zig | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

(limited to 'src/codegen.zig')

diff --git a/src/codegen.zig b/src/codegen.zig
index c3cd64cf73..e21626bdb6 100644
--- a/src/codegen.zig
+++ b/src/codegen.zig
@@ -865,6 +865,7 @@ fn Function(comptime arch: std.Target.Cpu.Arch) type {
         fn genFuncInst(self: *Self, inst: *ir.Inst) !MCValue {
             switch (inst.tag) {
                 .add => return self.genAdd(inst.castTag(.add).?),
+                .addwrap => return self.genAddWrap(inst.castTag(.addwrap).?),
                 .alloc => return self.genAlloc(inst.castTag(.alloc).?),
                 .arg => return self.genArg(inst.castTag(.arg).?),
                 .assembly => return self.genAsm(inst.castTag(.assembly).?),
@@ -900,12 +901,14 @@ fn Function(comptime arch: std.Target.Cpu.Arch) type {
                 .loop => return self.genLoop(inst.castTag(.loop).?),
                 .not => return self.genNot(inst.castTag(.not).?),
                 .mul => return self.genMul(inst.castTag(.mul).?),
+                .mulwrap => return self.genMulWrap(inst.castTag(.mulwrap).?),
                 .ptrtoint => return self.genPtrToInt(inst.castTag(.ptrtoint).?),
                 .ref => return self.genRef(inst.castTag(.ref).?),
                 .ret => return self.genRet(inst.castTag(.ret).?),
                 .retvoid => return self.genRetVoid(inst.castTag(.retvoid).?),
                 .store => return self.genStore(inst.castTag(.store).?),
                 .sub => return self.genSub(inst.castTag(.sub).?),
+                .subwrap => return self.genSubWrap(inst.castTag(.subwrap).?),
                 .switchbr => return self.genSwitch(inst.castTag(.switchbr).?),
                 .unreach => return MCValue{ .unreach = {} },
                 .optional_payload => return self.genOptionalPayload(inst.castTag(.optional_payload).?),
@@ -1129,6 +1132,15 @@ fn Function(comptime arch: std.Target.Cpu.Arch) type {
             }
         }
 
+        fn genAddWrap(self: *Self, inst: *ir.Inst.BinOp) !MCValue {
+            // No side effects, so if it's unreferenced, do nothing.
+            if (inst.base.isUnused())
+                return MCValue.dead;
+            switch (arch) {
+                else => return self.fail(inst.base.src, "TODO implement addwrap for {}", .{self.target.cpu.arch}),
+            }
+        }
+
         fn genMul(self: *Self, inst: *ir.Inst.BinOp) !MCValue {
             // No side effects, so if it's unreferenced, do nothing.
             if (inst.base.isUnused())
@@ -1139,6 +1151,15 @@ fn Function(comptime arch: std.Target.Cpu.Arch) type {
             }
         }
 
+        fn genMulWrap(self: *Self, inst: *ir.Inst.BinOp) !MCValue {
+            // No side effects, so if it's unreferenced, do nothing.
+            if (inst.base.isUnused())
+                return MCValue.dead;
+            switch (arch) {
+                else => return self.fail(inst.base.src, "TODO implement mulwrap for {}", .{self.target.cpu.arch}),
+            }
+        }
+
         fn genBitAnd(self: *Self, inst: *ir.Inst.BinOp) !MCValue {
             // No side effects, so if it's unreferenced, do nothing.
             if (inst.base.isUnused())
@@ -1392,6 +1413,15 @@ fn Function(comptime arch: std.Target.Cpu.Arch) type {
             }
         }
 
+        fn genSubWrap(self: *Self, inst: *ir.Inst.BinOp) !MCValue {
+            // No side effects, so if it's unreferenced, do nothing.
+            if (inst.base.isUnused())
+                return MCValue.dead;
+            switch (arch) {
+                else => return self.fail(inst.base.src, "TODO implement subwrap for {}", .{self.target.cpu.arch}),
+            }
+        }
+
         fn genArmBinOp(self: *Self, inst: *ir.Inst, op_lhs: *ir.Inst, op_rhs: *ir.Inst, op: ir.Inst.Tag) !MCValue {
             const lhs = try self.resolveInst(op_lhs);
             const rhs = try self.resolveInst(op_rhs);
-- 
cgit v1.2.3