add end to end test for fmf

Author: vchuravy

test/llvmpasses/fmf.jl

@@ -0,0 +1,28 @@
+# This file is a part of Julia. License is MIT: https://julialang.org/license
+# REQUIRES: x86_64
+# RUN: julia --startup-file=no %s %t -O && llvm-link -S %t/* -o %t/module.ll
+# RUN: cat %t/module.ll | llc - -mtriple=x86_64-- -mattr=fma | 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"))
+
+# CHECK-LABEL: julia_dotf_
+function dotf(a, b)
+    s = 0.0
+    @inbounds @simd for i ∈ eachindex(a)
+# CHECK:    vfmadd231pd
+# CHECK-NEXT:    vfmadd231pd
+# CHECK-NEXT:    vfmadd231pd
+# CHECK-NEXT:    vfmadd231pd
+        s += a[i] * b[i]
+    end
+    s
+end
+
+emit(dotf, Vector{Float64}, Vector{Float64})

test/llvmpasses/lit.cfg renamed to test/llvmpasses/lit.cfg.py

@@ -16,3 +16,6 @@
 path = os.path.pathsep.join((os.path.join(os.path.dirname(__file__),"../../usr/tools"), os.path.join(os.path.dirname(__file__),"../../usr/bin"), config.environment['PATH']))
 config.environment['PATH'] = path
 config.environment['HOME'] = "/tmp"
+
+if platform.machine() == "x86_64":
+    config.available_features.add('x86_64')