Re: [Mesa-dev] [PATCH 20/22] compiler/nir: add lowering for 16-bit flrp

[Jason Ekstrand]

Rb

On May 17, 2018 01:49:07 Iago Toral Quiroga  wrote:


---
src/compiler/nir/nir.h| 1 +
src/compiler/nir/nir_opt_algebraic.py | 1 +
2 files changed, 2 insertions(+)

diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h
index 59c84bde268..7e4c78cc1b7 100644
--- a/src/compiler/nir/nir.h
+++ b/src/compiler/nir/nir.h
@@ -1871,6 +1871,7 @@ typedef struct nir_shader_compiler_options {
   bool lower_fdiv;
   bool lower_ffma;
   bool fuse_ffma;
+   bool lower_flrp16;
   bool lower_flrp32;
   /** Lowers flrp when it does not support doubles */
   bool lower_flrp64;
diff --git a/src/compiler/nir/nir_opt_algebraic.py 
b/src/compiler/nir/nir_opt_algebraic.py

index 1033a42a06c..75e71efcc6b 100644
--- a/src/compiler/nir/nir_opt_algebraic.py
+++ b/src/compiler/nir/nir_opt_algebraic.py
@@ -113,6 +113,7 @@ optimizations = [
   (('~flrp', 0.0, a, b), ('fmul', a, b)),
   (('~flrp', a, b, ('b2f', c)), ('bcsel', c, b, a), 'options->lower_flrp32'),
   (('~flrp', a, 0.0, c), ('fadd', ('fmul', ('fneg', a), c), a)),
+   (('flrp@16', a, b, c), ('fadd', ('fmul', c, ('fsub', b, a)), a), 
'options->lower_flrp16'),
   (('flrp@32', a, b, c), ('fadd', ('fmul', c, ('fsub', b, a)), a), 
   'options->lower_flrp32'),
   (('flrp@64', a, b, c), ('fadd', ('fmul', c, ('fsub', b, a)), a), 
   'options->lower_flrp64'),

   (('ffract', a), ('fsub', a, ('ffloor', a)), 'options->lower_ffract'),
--
2.14.1

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[Mesa-dev] [PATCH 20/22] compiler/nir: add lowering for 16-bit flrp

[Iago Toral Quiroga]

---
 src/compiler/nir/nir.h| 1 +
 src/compiler/nir/nir_opt_algebraic.py | 1 +
 2 files changed, 2 insertions(+)

diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h
index 59c84bde268..7e4c78cc1b7 100644
--- a/src/compiler/nir/nir.h
+++ b/src/compiler/nir/nir.h
@@ -1871,6 +1871,7 @@ typedef struct nir_shader_compiler_options {
bool lower_fdiv;
bool lower_ffma;
bool fuse_ffma;
+   bool lower_flrp16;
bool lower_flrp32;
/** Lowers flrp when it does not support doubles */
bool lower_flrp64;
diff --git a/src/compiler/nir/nir_opt_algebraic.py 
b/src/compiler/nir/nir_opt_algebraic.py
index 1033a42a06c..75e71efcc6b 100644
--- a/src/compiler/nir/nir_opt_algebraic.py
+++ b/src/compiler/nir/nir_opt_algebraic.py
@@ -113,6 +113,7 @@ optimizations = [
(('~flrp', 0.0, a, b), ('fmul', a, b)),
(('~flrp', a, b, ('b2f', c)), ('bcsel', c, b, a), 'options->lower_flrp32'),
(('~flrp', a, 0.0, c), ('fadd', ('fmul', ('fneg', a), c), a)),
+   (('flrp@16', a, b, c), ('fadd', ('fmul', c, ('fsub', b, a)), a), 
'options->lower_flrp16'),
(('flrp@32', a, b, c), ('fadd', ('fmul', c, ('fsub', b, a)), a), 
'options->lower_flrp32'),
(('flrp@64', a, b, c), ('fadd', ('fmul', c, ('fsub', b, a)), a), 
'options->lower_flrp64'),
(('ffract', a), ('fsub', a, ('ffloor', a)), 'options->lower_ffract'),
-- 
2.14.1

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