From 00ede877c3f0da668d8361b1158f835ca6a054bf Mon Sep 17 00:00:00 2001
From: smallnamespace <smallnamespace@gmail.com>
Date: Sat, 14 Sep 2019 02:20:12 -0700
Subject: [PATCH] Test that sqrt_llvm_fast intrinsic emits 'fast' tag

---
 test/llvmpasses/fastmath.jl | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 test/llvmpasses/fastmath.jl

diff --git a/test/llvmpasses/fastmath.jl b/test/llvmpasses/fastmath.jl
new file mode 100644
index 0000000000000..4e0d35e300d5c
--- /dev/null
+++ b/test/llvmpasses/fastmath.jl
@@ -0,0 +1,18 @@
+# This file is a part of Julia. License is MIT: https://julialang.org/license
+
+# RUN: julia --startup-file=no %s %t && llvm-link -S %t/* -o %t/module.ll
+# RUN: cat %t/module.ll | FileCheck %s
+
+## Notes:
+# This script uses the `emit` function (defined llvmpasses.jl) to emit either
+# optimized or unoptimized LLVM IR. Each function is emitted individually and
+# `llvm-link` is used to create a single module that can be passed to opt.
+# The order in which files are emitted and linked is important since `lit` will
+# process the test cases in order.
+
+include(joinpath("..", "testhelpers", "llvmpasses.jl"))
+
+import Base.FastMath
+
+# CHECK: call fast float @llvm.sqrt.f32(float %0)
+emit(FastMath.sqrt_fast, Float32)