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* gnu/packages/patches/ldc-i686-int128-alignment.patch: New patches. * gnu/local.mk (dist_patch_DATA): Register it. * gnu/packages/dlang.scm (ldc-bootstrap)[patches]: Use it. Change-Id: I21671c2a54634c284d8832f0627fe28494e1b0b8 Signed-off-by: Liliana Marie Prikler <liliana.prikler@gmail.com>
41 lines
1.3 KiB
Diff
41 lines
1.3 KiB
Diff
Description: Adjust int128 alignment
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Author: Walter Bright <WalterBright@users.noreply.github.com>
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Origin: backport, https://github.com/ldc-developers/ldc/commit/f634e2a6542a8b563d9ba1b680afd5337b4c09ea
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Bug: https://github.com/ldc-developers/ldc/issues/1356
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Last-Update: 2024-12-30
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---
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This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
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--- a/dmd/common/int128.d
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+++ b/dmd/common/int128.d
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@@ -20,7 +20,29 @@
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alias U = ulong;
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enum Ubits = uint(U.sizeof * 8);
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-align(16) struct Cent
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+version (DigitalMars)
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+{
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+ /* The alignment should follow target.stackAlign(),
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+ * which is `isXmmSupported() ? 16 : (is64bit ? 8 : 4)
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+ */
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+ version (D_SIMD)
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+ private enum Cent_alignment = 16;
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+ else version (X86_64)
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+ private enum Cent_alignment = 8;
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+ else
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+ private enum Cent_alignment = 4;
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+}
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+else
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+{
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+ version (LDC) version (X86) version = LDC_X86;
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+
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+ version (X86_64) private enum Cent_alignment = 16;
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+ // 32-bit x86: need default alignment due to https://github.com/ldc-developers/ldc/issues/1356
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+ else version (LDC_X86) private enum Cent_alignment = U.alignof;
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+ else private enum Cent_alignment = (size_t.sizeof * 2);
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+}
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+
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+align(Cent_alignment) struct Cent
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{
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U lo; // low 64 bits
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U hi; // high 64 bits
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