From adcc745cc0f66a6a93bb281999c55cea0a10b7d2 Mon Sep 17 00:00:00 2001
From: Juan Cruz Viotti <jv@jviotti.com>
Date: Sat, 5 Oct 2024 18:01:49 -0400
Subject: [PATCH] More flags

Signed-off-by: Juan Cruz Viotti <jv@jviotti.com>
---
 vendor/noa/cmake/noa/compiler/options.cmake | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/vendor/noa/cmake/noa/compiler/options.cmake b/vendor/noa/cmake/noa/compiler/options.cmake
index d496ebc65..be6145387 100644
--- a/vendor/noa/cmake/noa/compiler/options.cmake
+++ b/vendor/noa/cmake/noa/compiler/options.cmake
@@ -44,6 +44,9 @@ function(noa_add_default_options visibility target)
       -fstrict-aliasing
       -ftree-vectorize
 
+      # To improve how much GCC/Clang will vectorize
+      -fno-math-errno
+
       # Assume that signed arithmetic overflow of addition, subtraction and
       # multiplication wraps around using twos-complement representation
       # See https://users.cs.utah.edu/~regehr/papers/overflow12.pdf
@@ -79,10 +82,12 @@ function(noa_add_default_options visibility target)
       -fslp-vectorize)
   elseif(NOA_COMPILER_GCC)
     target_compile_options("${target}" ${visibility}
-      # To improve how much GCC will vectorize
-      -fno-math-errno
       -fno-trapping-math
 
+      # More aggressive vectoring (GCC >= 8)
+      -mprefer-vector
+      -width=512
+
       # Newer versions of GCC (i.e. 14) seem to print a lot of false-positives here
       -Wno-dangling-reference
 
@@ -95,13 +100,16 @@ endfunction()
 # - On Clang , seems to only take effect on release shared builds
 # - On GCC, seems to only take effect on release shared builds
 function(noa_add_vectorization_diagnostics target)
-  # See https://llvm.org/docs/Vectorizers.html#id6
-  if(NOA_COMPILER_LLVM)
+  if(NOA_COMPILER_MSVC)
+    target_compile_options("${target}" PRIVATE "-Qvec-report:[1,2]")
+  elseif(NOA_COMPILER_LLVM)
+    # See https://llvm.org/docs/Vectorizers.html#id6
     target_compile_options("${target}" PRIVATE
       -Rpass-analysis=loop-vectorize
       -Rpass-missed=loop-vectorize)
   elseif(NOA_COMPILER_GCC)
     target_compile_options("${target}" PRIVATE
-      -fopt-info-vec-missed)
+      -fopt-info-vec-missed
+      -fopt-info-loop-missed)
   endif()
 endfunction()