From 6e4dbcd1150ea6d4fbf87a7840b3d8481bfcc8c5 Mon Sep 17 00:00:00 2001 From: Niels Ole Salscheider Date: Sat, 10 Aug 2013 10:38:54 +0000 Subject: R600/SI: FMA is faster than fmul and fadd for f64 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188136 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/CodeGen/R600/fmuladd.ll | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 test/CodeGen/R600/fmuladd.ll (limited to 'test') diff --git a/test/CodeGen/R600/fmuladd.ll b/test/CodeGen/R600/fmuladd.ll new file mode 100644 index 0000000000..ac379f44aa --- /dev/null +++ b/test/CodeGen/R600/fmuladd.ll @@ -0,0 +1,31 @@ +; RUN: llc < %s -march=r600 -mcpu=SI | FileCheck %s + +; CHECK: @fmuladd_f32 +; CHECK: V_MAD_F32 {{VGPR[0-9]+, VGPR[0-9]+, VGPR[0-9]+, VGPR[0-9]+}} + +define void @fmuladd_f32(float addrspace(1)* %out, float addrspace(1)* %in1, + float addrspace(1)* %in2, float addrspace(1)* %in3) { + %r0 = load float addrspace(1)* %in1 + %r1 = load float addrspace(1)* %in2 + %r2 = load float addrspace(1)* %in3 + %r3 = tail call float @llvm.fmuladd.f32(float %r0, float %r1, float %r2) + store float %r3, float addrspace(1)* %out + ret void +} + +declare float @llvm.fmuladd.f32(float, float, float) + +; CHECK: @fmuladd_f64 +; CHECK: V_FMA_F64 {{VGPR[0-9]+_VGPR[0-9]+, VGPR[0-9]+_VGPR[0-9]+, VGPR[0-9]+_VGPR[0-9]+, VGPR[0-9]+_VGPR[0-9]+}} + +define void @fmuladd_f64(double addrspace(1)* %out, double addrspace(1)* %in1, + double addrspace(1)* %in2, double addrspace(1)* %in3) { + %r0 = load double addrspace(1)* %in1 + %r1 = load double addrspace(1)* %in2 + %r2 = load double addrspace(1)* %in3 + %r3 = tail call double @llvm.fmuladd.f64(double %r0, double %r1, double %r2) + store double %r3, double addrspace(1)* %out + ret void +} + +declare double @llvm.fmuladd.f64(double, double, double) -- cgit v1.2.3