From cf229cad249a0c9ba62188cbb9cd74b96176db8f Mon Sep 17 00:00:00 2001
From: Cheng Shao <terrorjack@type.dance>
Date: Tue, 7 May 2024 20:45:32 +0000
Subject: [PATCH] hadrian: disable in-tree gmp fft code path for wasm32
This patch disables in-tree GMP FFT code paths for wasm32 target in
order to give up some performance of multiplying very large operands
in exchange for reduced code size.
(cherry picked from commit 1a32f82807ae01813f14bdf12fed75eb32799e18)
---
hadrian/src/Settings/Builders/Configure.hs | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/hadrian/src/Settings/Builders/Configure.hs b/hadrian/src/Settings/Builders/Configure.hs
index 83d60306728..fadeed02331 100644
--- a/hadrian/src/Settings/Builders/Configure.hs
+++ b/hadrian/src/Settings/Builders/Configure.hs
@@ -17,6 +17,10 @@ configureBuilderArgs = do
pure $ [ "--enable-shared=no"
, "--host=" ++ targetPlatform -- GMP's host is our target
, "--build=" ++ buildPlatform ]
+ -- Disable FFT logic on wasm32, sacrifice
+ -- performance of multiplying very large operands
+ -- to save code size
+ <> [ "--disable-fft" | targetArch == "wasm32" ]
-- Disable GMP's alloca usage on wasm32, it may
-- cause stack overflow (#22602) due to the
-- rather small 64KB default stack size. See
--
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