From 5a9210e651803b27c3865b80f353ba1a2c3aa2a6 Mon Sep 17 00:00:00 2001
From: Sanjay Patel <spatel@rotateright.com>
Date: Tue, 20 Mar 2018 16:08:47 +0000
Subject: [PATCH] [AArch64] add fabs tests for PR36600; NFC

llvm-svn: 327995
---
 llvm/test/CodeGen/AArch64/fabs.ll | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 llvm/test/CodeGen/AArch64/fabs.ll

diff --git a/llvm/test/CodeGen/AArch64/fabs.ll b/llvm/test/CodeGen/AArch64/fabs.ll
new file mode 100644
index 0000000..0508fdd
--- /dev/null
+++ b/llvm/test/CodeGen/AArch64/fabs.ll
@@ -0,0 +1,33 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=aarch64-unknown-unknown | FileCheck %s
+
+; FIXME:
+; PR36600: https://bugs.llvm.org/show_bug.cgi?id=36600
+; This is not fabs. If X = -0.0, it should return -0.0 not 0.0.
+
+define double @not_fabs(double %x) #0 {
+; CHECK-LABEL: not_fabs:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    fabs d0, d0
+; CHECK-NEXT:    ret
+  %cmp = fcmp nnan ole double %x, 0.0
+  %sub = fsub nnan double -0.0, %x
+  %cond = select i1 %cmp, double %sub, double %x
+  ret double %cond
+}
+
+; Try again with different type, predicate, and compare constant.
+
+define float @still_not_fabs(float %x) #0 {
+; CHECK-LABEL: still_not_fabs:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    fabs s0, s0
+; CHECK-NEXT:    ret
+  %cmp = fcmp nnan oge float %x, -0.0
+  %sub = fsub nnan float -0.0, %x
+  %cond = select i1 %cmp, float %x, float %sub
+  ret float %cond
+}
+
+attributes #0 = { "no-nans-fp-math"="true" }
+
-- 
2.7.4