From 7f4c9d142986b6dab625c8a3034cfc57ce54f6d9 Mon Sep 17 00:00:00 2001
From: Akira Hatanaka <ahatanaka@mips.com>
Date: Wed, 11 Apr 2012 22:49:04 +0000
Subject: Emit abs.s or abs.d only if -enable-no-nans-fp-math is supplied by
 user. Invalid operation is signaled if the operand of these instructions is
 NaN.

llvm-svn: 154545
---
 llvm/test/CodeGen/Mips/fabs.ll | 52 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 llvm/test/CodeGen/Mips/fabs.ll

(limited to 'llvm/test/CodeGen/Mips/fabs.ll')

diff --git a/llvm/test/CodeGen/Mips/fabs.ll b/llvm/test/CodeGen/Mips/fabs.ll
new file mode 100644
index 00000000000..b296ab390d5
--- /dev/null
+++ b/llvm/test/CodeGen/Mips/fabs.ll
@@ -0,0 +1,52 @@
+; RUN: llc  < %s -march=mipsel -mcpu=mips32 | FileCheck %s -check-prefix=32
+; RUN: llc  < %s -march=mipsel -mcpu=mips32r2 | FileCheck %s -check-prefix=32R2
+; RUN: llc  < %s -march=mips64el -mcpu=mips64 -mattr=n64 | FileCheck %s -check-prefix=64
+; RUN: llc  < %s -march=mips64el -mcpu=mips64r2 -mattr=n64 | FileCheck %s -check-prefix=64R2
+; RUN: llc  < %s -march=mipsel -mcpu=mips32 -enable-no-nans-fp-math | FileCheck %s -check-prefix=NO-NAN
+
+define float @foo0(float %a) nounwind readnone {
+entry:
+
+; 32: lui  $[[T0:[0-9]+]], 32767
+; 32: ori  $[[MSK0:[0-9]+]], $[[T0]], 65535
+; 32: and  $[[AND:[0-9]+]], ${{[0-9]+}}, $[[MSK0]]
+; 32: mtc1 $[[AND]], $f0
+
+; 32R2: ins  $[[INS:[0-9]+]], $zero, 31, 1
+; 32R2: mtc1 $[[INS]], $f0
+
+; NO-NAN: abs.s
+
+  %call = tail call float @fabsf(float %a) nounwind readnone
+  ret float %call
+}
+
+declare float @fabsf(float) nounwind readnone
+
+define double @foo1(double %a) nounwind readnone {
+entry:
+
+; 32: lui  $[[T0:[0-9]+]], 32767
+; 32: ori  $[[MSK0:[0-9]+]], $[[T0]], 65535
+; 32: and  $[[AND:[0-9]+]], ${{[0-9]+}}, $[[MSK0]]
+; 32: mtc1 $[[AND]], $f1
+
+; 32R2: ins  $[[INS:[0-9]+]], $zero, 31, 1
+; 32R2: mtc1 $[[INS]], $f1
+
+; 64: daddiu  $[[T0:[0-9]+]], $zero, 1
+; 64: dsll    $[[T1:[0-9]+]], ${{[0-9]+}}, 63
+; 64: daddiu  $[[MSK0:[0-9]+]], $[[T1]], -1
+; 64: and     $[[AND:[0-9]+]], ${{[0-9]+}}, $[[MSK0]]
+; 64: dmtc1   $[[AND]], $f0
+
+; 64R2: dins  $[[INS:[0-9]+]], $zero, 63, 1
+; 64R2: dmtc1 $[[INS]], $f0
+
+; NO-NAN: abs.d
+
+  %call = tail call double @fabs(double %a) nounwind readnone
+  ret double %call
+}
+
+declare double @fabs(double) nounwind readnone
-- 
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