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Guard auto-vectorization flag for GCC only #3864

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Merged
softins merged 3 commits into from
Aug 11, 2026
+6 −2
Merged

Guard auto-vectorization flag for GCC only #3864

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2135b7b
Guard auto-vectorization flag for GCC only
RawNuke Aug 7, 2026
f9d463a
Correct cost-model comment for -ftree-vectorize scope
RawNuke Aug 9, 2026
4124988
Trim the -ftree-vectorize comment to the essential reason
RawNuke Aug 10, 2026
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8 changes: 6 additions & 2 deletions Jamulus.pro
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Original file line number Diff line number Diff line change
Expand Up @@ -1175,8 +1175,12 @@ contains(CONFIG, "opus_shared_lib") {
}
}

# Always enable auto vectorization
QMAKE_CXXFLAGS+=-ftree-vectorize
# Scope -ftree-vectorize to GCC mkspecs (#3863): Clang already auto-vectorizes
# and MSVC warns on the flag. At -O2 the flag raises GCC's cost model to `cheap`,
# which vectorizes the mixer loops on every current GCC (11 through 14).
*-g++* {
QMAKE_CXXFLAGS += -ftree-vectorize
}

# disable version check if requested (#370)
contains(CONFIG, "disable_version_check") {
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