stage2: change x86_64 max int alignment from 8 to 16

For x86_64, LLVMABIAlignmentOfType(i128) reports 8. However I think 16
is a better number for two reasons:
1. Better machine code when loading into SIMD register.
2. The C ABI wants 16 for extern structs.

1 files changed, 1 insertions, 8 deletions

diff --git a/src/target.zig b/src/target.zig
index 7818d496eb..9249ed1b60 100644
--- a/src/target.zig
+++ b/src/target.zig
@@ -555,7 +555,7 @@ pub const AtomicPtrAlignmentDiagnostics = struct {
     max_bits: u16 = undefined,
 };
 
-/// If ABI alignment of `ty` is OK for atomic operations, returs 0.
+/// If ABI alignment of `ty` is OK for atomic operations, returns 0.
 /// Otherwise returns the alignment required on a pointer for the target
 /// to perform atomic operations.
 pub fn atomicPtrAlignment(
@@ -645,9 +645,6 @@ pub fn atomicPtrAlignment(
                 };
                 return error.FloatTooBig;
             }
-            if (target.cpu.arch == .x86_64 and bit_count > 64) {
-                return 16;
-            }
             return 0;
         },
         .Bool => return 0,
@@ -666,10 +663,6 @@ pub fn atomicPtrAlignment(
         return error.IntTooBig;
     }
 
-    if (target.cpu.arch == .x86_64 and bit_count > 64) {
-        return 16;
-    }
-
     return 0;
 }