From 7c99bf800f703f6e1e77c855ff6b1b3f799b6ab0 Mon Sep 17 00:00:00 2001
From: Craig Topper <craig.topper@sifive.com>
Date: Wed, 7 Sep 2022 20:54:49 -0700
Subject: [PATCH] [X86] Pre-commit test for PR57576. NFC

---
 llvm/test/CodeGen/X86/pr57576.ll | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 llvm/test/CodeGen/X86/pr57576.ll

diff --git a/llvm/test/CodeGen/X86/pr57576.ll b/llvm/test/CodeGen/X86/pr57576.ll
new file mode 100644
index 000000000000..ecc30f60532c
--- /dev/null
+++ b/llvm/test/CodeGen/X86/pr57576.ll
@@ -0,0 +1,28 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu | FileCheck %s
+
+define { i64, i64 } @sub(i64 noundef %0, i64 noundef %1, i64 noundef %2, i64 noundef %3) {
+; CHECK-LABEL: sub:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    movq %rdi, %rax
+; CHECK-NEXT:    subq %rdx, %rax
+; CHECK-NEXT:    sbbq $0, %rsi
+; CHECK-NEXT:    subq %rcx, %rsi
+; CHECK-NEXT:    movq %rsi, %rdx
+; CHECK-NEXT:    retq
+  %5 = zext i64 %1 to i128
+  %6 = shl nuw i128 %5, 64
+  %7 = zext i64 %0 to i128
+  %8 = zext i64 %3 to i128
+  %9 = mul i128 %8, -18446744073709551616
+  %10 = zext i64 %2 to i128
+  %11 = or i128 %6, %7
+  %12 = sub i128 %11, %10
+  %13 = add i128 %12, %9
+  %14 = trunc i128 %13 to i64
+  %15 = lshr i128 %13, 64
+  %16 = trunc i128 %15 to i64
+  %17 = insertvalue { i64, i64 } poison, i64 %14, 0
+  %18 = insertvalue { i64, i64 } %17, i64 %16, 1
+  ret { i64, i64 } %18
+}