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llvm-mirror/test/MC/COFF/comm.ll
David Majnemer 075f09bac5 WinCOFF: Emit common symbols as specified in the COFF spec
Summary:
Local common symbols were properly inserted into the .bss section.
However, putting external common symbols in the .bss section would give
them a strong definition.

Instead, encode them as undefined, external symbols who's symbol value
is equivalent to their size.

Reviewers: Bigcheese, rafael, rnk

CC: llvm-commits

Differential Revision: http://reviews.llvm.org/D3324

llvm-svn: 205811
2014-04-08 22:33:40 +00:00

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365 B
LLVM

; RUN: llc -mtriple i386-pc-mingw32 < %s | FileCheck %s
@a = internal global i8 0, align 1
@b = internal global double 0.000000e+00, align 8
@c = common global i8 0, align 1
@d = common global double 0.000000e+00, align 8
; .lcomm uses byte alignment
; CHECK: .lcomm _a,1
; CHECK: .lcomm _b,8,8
; .comm uses log2 alignment
; CHECK: .comm _c,1
; CHECK: .comm _d,8