stage2: sparc64: Spill CCR before doing calls

2022-06-01 08:58:14 +07:00
parent 2dfe307d60
commit 97c43afefe
1 changed files with 5 additions and 0 deletions
--- a/src/arch/sparc64/CodeGen.zig
+++ b/src/arch/sparc64/CodeGen.zig
@@ -1047,6 +1047,11 @@ fn airCall(self: *Self, inst: Air.Inst.Index, modifier: std.builtin.CallOptions.

    var info = try self.resolveCallingConventionValues(fn_ty, .caller);
    defer info.deinit(self);
+
+    // CCR is volatile across function calls
+    // (SCD 2.4.1, page 3P-10)
+    try self.spillCompareFlagsIfOccupied();
+
    for (info.args) |mc_arg, arg_i| {
        const arg = args[arg_i];
        const arg_ty = self.air.typeOf(arg);