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i686-linux-android: increase CPU baseline to Pentium 4 (without an actual change #136885

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Feb 12, 2025
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i686-linux-android: increase CPU baseline to Pentium 4 (without an actual change #136885

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2 changes: 1 addition & 1 deletion compiler/rustc_target/src/spec/targets/i686_linux_android.rs
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Expand Up @@ -9,7 +9,7 @@ pub(crate) fn target() -> Target {
base.max_atomic_width = Some(64);

// https://developer.android.com/ndk/guides/abis.html#x86
base.cpu = "pentiumpro".into();
base.cpu = "pentium4".into();
base.features = "+mmx,+sse,+sse2,+sse3,+ssse3".into();
base.stack_probes = StackProbeType::Inline;

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2 changes: 1 addition & 1 deletion src/doc/rustc/src/platform-support.md
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Expand Up @@ -165,7 +165,7 @@ target | std | notes
`i586-pc-windows-msvc` | * | 32-bit Windows (original Pentium) [^x86_32-floats-x87]
`i586-unknown-linux-gnu` | ✓ | 32-bit Linux (kernel 3.2, glibc 2.17, original Pentium) [^x86_32-floats-x87]
`i586-unknown-linux-musl` | ✓ | 32-bit Linux (musl 1.2.3, original Pentium) [^x86_32-floats-x87]
[`i686-linux-android`](platform-support/android.md) | ✓ | 32-bit x86 Android ([PentiumPro with SSE](https://developer.android.com/ndk/guides/abis.html#x86)) [^x86_32-floats-return-ABI]
[`i686-linux-android`](platform-support/android.md) | ✓ | 32-bit x86 Android ([Pentium 4 plus various extensions](https://developer.android.com/ndk/guides/abis.html#x86)) [^x86_32-floats-return-ABI]
[`i686-pc-windows-gnullvm`](platform-support/pc-windows-gnullvm.md) | ✓ | 32-bit x86 MinGW (Windows 10+, Pentium 4), LLVM ABI [^x86_32-floats-return-ABI]
[`i686-unknown-freebsd`](platform-support/freebsd.md) | ✓ | 32-bit x86 FreeBSD (Pentium 4) [^x86_32-floats-return-ABI]
`i686-unknown-linux-musl` | ✓ | 32-bit Linux with musl 1.2.3 (Pentium 4) [^x86_32-floats-return-ABI]
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