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restored intrinsics and added tuning options to ptxgen

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Evghenii
2013-11-15 15:04:04 +01:00
parent f9d2ede83c
commit c93e71698e
2 changed files with 8 additions and 6 deletions
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12
builtins/target-nvptx64.ll
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@@ -510,21 +510,21 @@ declare double @llvm.nvvm.sqrt.d(double %f) nounwind readonly alwaysinline
define float @__rcp_uniform_float(float) nounwind readonly alwaysinline {
; uniform float iv = extract(__rcp_u(v), 0);
; return iv * (2. - v * iv);
; %ret = fdiv float 1.,%0
%ret = tail call float asm sideeffect "rcp.approx.ftz.f32 $0, $1;", "=f,f"(float %0) nounwind readnone alwaysinline
%ret = fdiv float 1.,%0
; %ret = tail call float asm sideeffect "rcp.approx.ftz.f32 $0, $1;", "=f,f"(float %0) nounwind readnone alwaysinline
ret float %ret
}
;; declare float @__sqrt_uniform_float(float) nounwind readnone
define float @__sqrt_uniform_float(float) nounwind readonly alwaysinline {
;;%ret = call float @llvm.nvvm.sqrt.f(float %0)
%ret = tail call float asm sideeffect "sqrt.approx.ftz.f32 $0, $1;", "=f,f"(float %0) nounwind readnone alwaysinline
%ret = call float @llvm.nvvm.sqrt.f(float %0)
; %ret = tail call float asm sideeffect "sqrt.approx.ftz.f32 $0, $1;", "=f,f"(float %0) nounwind readnone alwaysinline
ret float %ret
}
;; declare float @__rsqrt_uniform_float(float) nounwind readnone
define float @__rsqrt_uniform_float(float) nounwind readonly alwaysinline
{
;; %ret = call float @llvm.nvvm.rsqrt.approx.f(float %0)
%ret = tail call float asm sideeffect "rsqrt.approx.ftz.f32 $0, $1;", "=f,f"(float %0) nounwind readnone alwaysinline
%ret = call float @llvm.nvvm.rsqrt.approx.f(float %0)
; %ret = tail call float asm sideeffect "rsqrt.approx.ftz.f32 $0, $1;", "=f,f"(float %0) nounwind readnone alwaysinline
ret float %ret
}

2
examples_cuda/aobench/Makefile_gpu
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@@ -13,6 +13,8 @@ ISPCFLAGS=-O3 --math-lib=default --target=nvptx64 --opt=fast-math
LLVM32 = $(HOME)/usr/local/llvm/bin-3.2
LLVM = $(HOME)/usr/local/llvm/bin-3.3
PTXGEN = $(HOME)/ptxgen
PTXGEN += -opt=3
PTXGEN += -ftz=1 -prec-div=0 -prec-sqrt=0 -fma=1
LLVM32DIS=$(LLVM32)/bin/llvm-dis