llvm-6502/test/CodeGen/NVPTX/rsqrt.ll

; RUN: llc < %s -march=nvptx -mcpu=sm_20 -nvptx-prec-divf32=1 -nvptx-prec-sqrtf32=0 | FileCheck %s

target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v16:16:16-v32:32:32-v64:64:64-v128:128:128-n16:32:64"

declare float @llvm.nvvm.sqrt.f(float)

define float @foo(float %a) {
; CHECK: rsqrt.approx.f32
  %val = tail call float @llvm.nvvm.sqrt.f(float %a)
  %ret = fdiv float 1.0, %val
  ret float %ret
}
[NVPTX] Add (1.0 / sqrt(x)) => rsqrt(x) generation when allowable by FP flags git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185178 91177308-0d34-0410-b5e6-96231b3b80d8 2013-06-28 17:58:13 +00:00			`; RUN: llc < %s -march=nvptx -mcpu=sm_20 -nvptx-prec-divf32=1 -nvptx-prec-sqrtf32=0 \| FileCheck %s`

			`target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v16:16:16-v32:32:32-v64:64:64-v128:128:128-n16:32:64"`

			`declare float @llvm.nvvm.sqrt.f(float)`

			`define float @foo(float %a) {`
			`; CHECK: rsqrt.approx.f32`
			`%val = tail call float @llvm.nvvm.sqrt.f(float %a)`
			`%ret = fdiv float 1.0, %val`
			`ret float %ret`
			`}`
Convert CodeGen//.ll tests to use the new CHECK-LABEL for easier debugging. No functionality change and all tests pass after conversion. This was done with the following sed invocation to catch label lines demarking function boundaries: sed -i '' "s/^;\( \)\([A-Z0-9_]\):\( \)test\([A-Za-z0-9_-]\):\( \)$/;\1\2-LABEL:\3test\4:\5/g" test/CodeGen//*.ll which was written conservatively to avoid false positives rather than false negatives. I scanned through all the changes and everything looks correct. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186258 91177308-0d34-0410-b5e6-96231b3b80d8 2013-07-13 20:38:47 +00:00