From 3604d9a42197c492105b590b8bb7b99f295d804a Mon Sep 17 00:00:00 2001 From: Justin Holewinski Date: Fri, 17 Jun 2011 12:12:42 +0000 Subject: PTX: Adjust rounding modes * rounding modes for fp add, mul, sub now use .rn * float -> int rounding correctly uses .rzi not .rni * 32bit fdiv for sm13 uses div.rn (instead of div.approx) * 32bit fdiv for sm10 now uses div (instead of div.approx) Approx is not IEEE 754 compatible (and should be optionally set by a flag to the backend instead). The .rn rounding modifier is the PTX default anyway, but it's better to be explicit. All these modifiers should be available by using __fmul_rz functions for example, but support will need to be added for this in the backend. Patch by Dan Bailey llvm-svn: 133253 --- llvm/test/CodeGen/PTX/mul.ll | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'llvm/test/CodeGen/PTX/mul.ll') diff --git a/llvm/test/CodeGen/PTX/mul.ll b/llvm/test/CodeGen/PTX/mul.ll index 93f94e35096..2093556dac4 100644 --- a/llvm/test/CodeGen/PTX/mul.ll +++ b/llvm/test/CodeGen/PTX/mul.ll @@ -11,28 +11,28 @@ ;} define ptx_device float @t1_f32(float %x, float %y) { -; CHECK: mul.f32 r0, r1, r2 +; CHECK: mul.rn.f32 r0, r1, r2 ; CHECK-NEXT: ret; %z = fmul float %x, %y ret float %z } define ptx_device double @t1_f64(double %x, double %y) { -; CHECK: mul.f64 rd0, rd1, rd2 +; CHECK: mul.rn.f64 rd0, rd1, rd2 ; CHECK-NEXT: ret; %z = fmul double %x, %y ret double %z } define ptx_device float @t2_f32(float %x) { -; CHECK: mul.f32 r0, r1, 0F40A00000; +; CHECK: mul.rn.f32 r0, r1, 0F40A00000; ; CHECK-NEXT: ret; %z = fmul float %x, 5.0 ret float %z } define ptx_device double @t2_f64(double %x) { -; CHECK: mul.f64 rd0, rd1, 0D4014000000000000; +; CHECK: mul.rn.f64 rd0, rd1, 0D4014000000000000; ; CHECK-NEXT: ret; %z = fmul double %x, 5.0 ret double %z -- cgit v1.2.3