maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/clang/test/CodeGen/microsoft-no-common-align.c

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

12 lines
542 B
C
Raw Normal View History

Limit COFF 'common' emission to <=32 alignment types. As reported in PR33035, LLVM crashes if given a common object with an alignment of greater than 32 bits. This is because the COFF file format does not support these alignments, so emitting them is broken anyway. This patch changes any global definitions greater than 32 bit alignment to no longer be in 'common'. https://bugs.llvm.org/show_bug.cgi?id=33035 Differential Revision: https://reviews.llvm.org/D56391 Change-Id: I48609289753b7f3b58c5e2bc1712756750fbd45a llvm-svn: 350643
2019-01-09 02:44:22 +08:00
// RUN: %clang_cc1 -triple x86_64-windows-msvc -emit-llvm -o - %s | FileCheck %s
typedef float TooLargeAlignment __attribute__((__vector_size__(64)));
typedef float NormalAlignment __attribute__((__vector_size__(4)));
TooLargeAlignment TooBig;
// CHECK: @TooBig = dso_local global <16 x float> zeroinitializer, align 64
NormalAlignment JustRight;
// CHECK: @JustRight = common dso_local global <1 x float> zeroinitializer, align 4
Fix r350643 to limit COFF emission to <= 32 BYTES instead of BITS. The patch in r350643 incorrectly sets the COFF emission based on bits instead of bytes. This patch converts the 32 via CharUnits to bits to compare the correct values. Change-Id: Icf38a16470ad5ae3531374969c033557ddb0d323 llvm-svn: 353411
2019-02-07 23:14:11 +08:00
TooLargeAlignment *IsAPointer;
// CHECK: @IsAPointer = common dso_local global <16 x float>* null, align 8