c5ab70c508
Clang [defaults to aligning `__int128_t` to 16 bytes], while LLVM `datalayout` strings [default to aligning `i128` to 8 bytes]. Wasm is currently using the defaults for both, so it's inconsistent. Fix this by adding `-i128:128` to Wasm's `datalayout` string so that it aligns `i128` to 16 bytes too. This is similar to [llvm/llvm-project@dbad963](dbad963a69) for SPARC. This fixes rust-lang/rust#133991; see that issue for further discussion. [defaults to aligning `__int128_t` to 16 bytes]:f8b4182f07/clang/lib/Basic/TargetInfo.cpp (L77)[default to aligning `i128` to 8 bytes]: https://llvm.org/docs/LangRef.html#langref-datalayout
27 lines
600 B
LLVM
27 lines
600 B
LLVM
; RUN: llc < %s -march=wasm32 | FileCheck %s
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; RUN: llc < %s -march=wasm64 | FileCheck %s
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; CHECK: .Li8:
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; CHECK-DAG: .size .Li8, 1
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@i8 = private constant i8 42
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; CHECK: .p2align 1
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; CHECK-NEXT: .Li16:
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; CHECK-DAG: .size .Li16, 2
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@i16 = private constant i16 42
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; CHECK: .p2align 2
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; CHECK-NEXT: .Li32:
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; CHECK-DAG: .size .Li32, 4
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@i32 = private constant i32 42
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; CHECK: .p2align 3
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; CHECK-NEXT: .Li64:
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; CHECK-DAG: .size .Li64, 8
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@i64 = private constant i64 42
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; CHECK: .p2align 4
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; CHECK-NEXT: .Li128:
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; CHECK-DAG: .size .Li128, 16
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@i128 = private constant i128 42
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