[libclc] 35/58: amdgpu: Use right builtn for rsq

[Andreas Boll]

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aboll-guest pushed a commit to branch master
in repository libclc.

commit a3d6cec243bbe0446e8500cfd6a241c3357aca41
Author: Matt Arsenault <Matthew.Arsenault at amd.com>
Date:   Tue Jul 19 19:02:01 2016 +0000

    amdgpu: Use right builtn for rsq
    
    The r600 path has never actually worked sinced double is not implemented
    there.
    
    git-svn-id: https://llvm.org/svn/llvm-project/libclc/trunk@276009 91177308-0d34-0410-b5e6-96231b3b80d8
---
 amdgpu/lib/math/sqrt.cl | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/amdgpu/lib/math/sqrt.cl b/amdgpu/lib/math/sqrt.cl
index 3e5b17c..395a3f9 100644
--- a/amdgpu/lib/math/sqrt.cl
+++ b/amdgpu/lib/math/sqrt.cl
@@ -30,6 +30,11 @@ _CLC_DEFINE_UNARY_BUILTIN(float, sqrt, __clc_sqrt, float)
 
 #pragma OPENCL EXTENSION cl_khr_fp64 : enable
 
+#ifdef __AMDGCN__
+  #define __clc_builtin_rsq __builtin_amdgcn_rsq
+#else
+  #define __clc_builtin_rsq __builtin_r600_recipsqrt_ieee
+#endif
 
 _CLC_OVERLOAD _CLC_DEF double sqrt(double x) {
 
@@ -38,7 +43,7 @@ _CLC_OVERLOAD _CLC_DEF double sqrt(double x) {
   unsigned exp1 = vcc ? 0xffffff80 : 0;
 
   double v01 = ldexp(x, exp0);
-  double v23 = __builtin_amdgpu_rsq(v01);
+  double v23 = __clc_builtin_rsq(v01);
   double v45 = v01 * v23;
   v23 = v23 * 0.5;
 

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