From fa0d58f96ea0d576cf4adbd77480cfd4ce0510c4 Mon Sep 17 00:00:00 2001
From: gingerBill <bill@gingerbill.org>
Date: Sat, 25 Sep 2021 15:38:56 +0100
Subject: [PATCH] Correct f64 -> u128/i128 generation

---
 core/runtime/internal.odin | 14 ++++++++++++++
 src/checker.cpp            |  2 ++
 src/llvm_backend_expr.cpp  |  2 +-
 src/types.cpp              |  2 ++
 4 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/core/runtime/internal.odin b/core/runtime/internal.odin
index 139d8d666..b7b5850cb 100644
--- a/core/runtime/internal.odin
+++ b/core/runtime/internal.odin
@@ -763,3 +763,17 @@ floattidf_unsigned :: proc(a: u128) -> f64 {
 	fb[1] = u32(a)                           // mantissa-low
 	return transmute(f64)fb
 }
+
+
+
+@(link_name="__fixunsdfti")
+fixunsdfti :: proc(a: f64) -> u128 {
+	x := u64(a)
+	return u128(x)
+}
+
+@(link_name="__fixunsdfdi")
+fixunsdfdi :: proc(a: f64) -> i128 {
+	x := i64(a)
+	return i128(x)
+}
diff --git a/src/checker.cpp b/src/checker.cpp
index 8d85784fa..fd3de3552 100644
--- a/src/checker.cpp
+++ b/src/checker.cpp
@@ -1980,6 +1980,8 @@ void generate_minimum_dependency_set(Checker *c, Entity *start) {
 		str_lit("modti3"),
 		str_lit("divti3"),
 		str_lit("fixdfti"),
+		str_lit("fixunsdfti"),
+		str_lit("fixunsdfdi"),
 		str_lit("floattidf"),
 		str_lit("floattidf_unsigned"),
 		str_lit("truncsfhf2"),
diff --git a/src/llvm_backend_expr.cpp b/src/llvm_backend_expr.cpp
index b2ef6d0d0..0f05e9b45 100644
--- a/src/llvm_backend_expr.cpp
+++ b/src/llvm_backend_expr.cpp
@@ -1194,7 +1194,7 @@ lbValue lb_emit_conv(lbProcedure *p, lbValue value, Type *t) {
 			res = lb_emit_conv(p, value, platform_src_type);
 			res = lb_emit_conv(p, res, platform_dst_type);
 			if (is_type_different_to_arch_endianness(dst)) {
-				res = lb_emit_byte_swap(p, res, t);
+				res = lb_emit_byte_swap(p, res, platform_dst_type);
 			}
 			return lb_emit_conv(p, res, t);
 		}
diff --git a/src/types.cpp b/src/types.cpp
index 568516007..97552240f 100644
--- a/src/types.cpp
+++ b/src/types.cpp
@@ -1518,6 +1518,7 @@ Type *integer_endian_type_to_platform_type(Type *t) {
 	case Basic_u32le: return t_u32;
 	case Basic_i64le: return t_i64;
 	case Basic_u64le: return t_u64;
+	case Basic_i128le: return t_i128;
 	case Basic_u128le: return t_u128;
 
 	case Basic_i16be: return t_i16;
@@ -1526,6 +1527,7 @@ Type *integer_endian_type_to_platform_type(Type *t) {
 	case Basic_u32be: return t_u32;
 	case Basic_i64be: return t_i64;
 	case Basic_u64be: return t_u64;
+	case Basic_i128be: return t_i128;
 	case Basic_u128be: return t_u128;
 
 	case Basic_f16le: return t_f16;