Fix i128 div/mod on mingw64
The Win64 docs are very clear that anything larger than 8 bytes is
passed by reference, and GCC MinGW64 honors that for __modti3 and
friends.
Patch by Jameson Nash!
llvm-svn: 208029
diff --git a/llvm/test/CodeGen/X86/mod128.ll b/llvm/test/CodeGen/X86/mod128.ll
new file mode 100644
index 0000000..4fdee11
--- /dev/null
+++ b/llvm/test/CodeGen/X86/mod128.ll
@@ -0,0 +1,26 @@
+; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s -check-prefix=X86-64
+; RUN: llc < %s -mtriple=x86_64-cygwin | FileCheck %s -check-prefix=WIN64
+; RUN: llc < %s -mtriple=x86_64-win32 | FileCheck %s -check-prefix=WIN64
+; RUN: llc < %s -mtriple=x86_64-mingw32 | FileCheck %s -check-prefix=WIN64
+
+define i64 @mod128(i128 %x) {
+ ; X86-64: movl $3, %edx
+ ; X86-64: xorl %ecx, %ecx
+ ; X86-64: callq __modti3
+ ; X86-64-NOT: movd %xmm0, %rax
+
+ ; WIN64-NOT: movl $3, %r8d
+ ; WIN64-NOT: xorl %r9d, %r9d
+ ; WIN64-DAG: movq %rdx, 56(%rsp)
+ ; WIN64-DAG: movq %rcx, 48(%rsp)
+ ; WIN64-DAG: leaq 48(%rsp), %rcx
+ ; WIN64-DAG: leaq 32(%rsp), %rdx
+ ; WIN64-DAG: movq $0, 40(%rsp)
+ ; WIN64-DAG: movq $3, 32(%rsp)
+ ; WIN64: callq __modti3
+ ; WIN64: movd %xmm0, %rax
+
+ %1 = srem i128 %x, 3
+ %2 = trunc i128 %1 to i64
+ ret i64 %2
+}