From 3382a840747c42c4a98eac802ee7b347a8ded1e4 Mon Sep 17 00:00:00 2001 From: Renato Golin Date: Thu, 21 Mar 2013 18:47:47 +0000 Subject: Avoid NEON SP-FP unless unsafe-math or Darwin NEON is not IEEE 754 compliant, so we should avoid lowering single-precision floating point operations with NEON unless unsafe-math is turned on. The equivalent VFP instructions are IEEE 754 compliant, but in some cores they're much slower, so some archs/OSs might still request it to be on by default, such as Swift and Darwin. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177651 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/CodeGen/ARM/fsubs.ll | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'test/CodeGen/ARM/fsubs.ll') diff --git a/test/CodeGen/ARM/fsubs.ll b/test/CodeGen/ARM/fsubs.ll index f039e74c8e..3013e56004 100644 --- a/test/CodeGen/ARM/fsubs.ll +++ b/test/CodeGen/ARM/fsubs.ll @@ -1,4 +1,5 @@ ; RUN: llc < %s -march=arm -mattr=+vfp2 | FileCheck %s -check-prefix=VFP2 +; RUN: llc < %s -march=arm -mcpu=cortex-a8 --enable-unsafe-fp-math | FileCheck %s -check-prefix=NFP1U ; RUN: llc < %s -march=arm -mcpu=cortex-a8 | FileCheck %s -check-prefix=NFP1 ; RUN: llc < %s -march=arm -mattr=+neon | FileCheck %s -check-prefix=NFP0 @@ -9,5 +10,6 @@ entry: } ; VFP2: vsub.f32 s -; NFP1: vsub.f32 d +; NFP1U: vsub.f32 d +; NFP1: vsub.f32 s ; NFP0: vsub.f32 s -- cgit v1.2.3-18-g5258 From 92ebd49f3fdd3529a091e008dea97e8ebfff5dd1 Mon Sep 17 00:00:00 2001 From: Renato Golin Date: Thu, 21 Mar 2013 21:30:49 +0000 Subject: Fix Darwin NEON FP and increase coverage git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177664 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/CodeGen/ARM/fsubs.ll | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'test/CodeGen/ARM/fsubs.ll') diff --git a/test/CodeGen/ARM/fsubs.ll b/test/CodeGen/ARM/fsubs.ll index 3013e56004..617b01881a 100644 --- a/test/CodeGen/ARM/fsubs.ll +++ b/test/CodeGen/ARM/fsubs.ll @@ -1,6 +1,7 @@ ; RUN: llc < %s -march=arm -mattr=+vfp2 | FileCheck %s -check-prefix=VFP2 -; RUN: llc < %s -march=arm -mcpu=cortex-a8 --enable-unsafe-fp-math | FileCheck %s -check-prefix=NFP1U -; RUN: llc < %s -march=arm -mcpu=cortex-a8 | FileCheck %s -check-prefix=NFP1 +; RUN: llc < %s -mtriple=arm-eabi -mcpu=cortex-a8 | FileCheck %s -check-prefix=NFP1 +; RUN: llc < %s -mtriple=arm-eabi -mcpu=cortex-a8 --enable-unsafe-fp-math | FileCheck %s -check-prefix=NFP1U +; RUN: llc < %s -mtriple=arm-darwin -mcpu=cortex-a8 | FileCheck %s -check-prefix=NFP1U ; RUN: llc < %s -march=arm -mattr=+neon | FileCheck %s -check-prefix=NFP0 define float @test(float %a, float %b) { -- cgit v1.2.3-18-g5258