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llvm-project/clang/test/CodeGen/builtins-ms.c

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-fms-extensions: Recognize _alloca as an alias for the alloca builtin Differential Revision: http://llvm-reviews.chandlerc.com/D1989 llvm-svn: 194617
2013-11-14 06:58:53 +08:00
// RUN: %clang_cc1 %s -emit-llvm -o - -fms-extensions -triple i686-pc-win32 | FileCheck %s
Bring r325915 back. The tests that failed on a windows host have been fixed. Original message: Start setting dso_local for COFF. With this there are still some GVs where we don't set dso_local because setGVProperties is never called. I intend to fix that in followup commits. This is just the bare minimum to teach shouldAssumeDSOLocal what it should do for COFF. llvm-svn: 325940
2018-02-24 03:30:48 +08:00
// CHECK-LABEL: define dso_local void @test_alloca(
-fms-extensions: Recognize _alloca as an alias for the alloca builtin Differential Revision: http://llvm-reviews.chandlerc.com/D1989 llvm-svn: 194617
2013-11-14 06:58:53 +08:00
void capture(void *);
void test_alloca(int n) {
capture(_alloca(n));
[CodeGen] Provide an appropriate alignment for dynamic allocas GCC documents __builtin_alloca as aligning the storage to at least __BIGGEST_ALIGNMENT__. MSVC documents essentially the same for the x64 ABI: https://msdn.microsoft.com/en-us/library/x9sx5da1.aspx The 32-bit ABI follows the same rule: it emits a call to _alloca_probe_16 Differential Revision: https://reviews.llvm.org/D24378 llvm-svn: 285316
2016-10-28 01:18:24 +08:00
// CHECK: %[[arg:.*]] = alloca i8, i32 %{{.*}}, align 16
-fms-extensions: Recognize _alloca as an alias for the alloca builtin Differential Revision: http://llvm-reviews.chandlerc.com/D1989 llvm-svn: 194617
2013-11-14 06:58:53 +08:00
// CHECK: call void @capture(i8* %[[arg]])
}
Add support for __builtin_alloca_with_align __builtin_alloca always uses __BIGGEST_ALIGNMENT__ for the alignment of the allocation. __builtin_alloca_with_align allows the programmer to specify the alignment of the allocation. This fixes PR30658. llvm-svn: 285544
2016-10-31 13:37:48 +08:00
Bring r325915 back. The tests that failed on a windows host have been fixed. Original message: Start setting dso_local for COFF. With this there are still some GVs where we don't set dso_local because setGVProperties is never called. I intend to fix that in followup commits. This is just the bare minimum to teach shouldAssumeDSOLocal what it should do for COFF. llvm-svn: 325940
2018-02-24 03:30:48 +08:00
// CHECK-LABEL: define dso_local void @test_alloca_with_align(
Add support for __builtin_alloca_with_align __builtin_alloca always uses __BIGGEST_ALIGNMENT__ for the alignment of the allocation. __builtin_alloca_with_align allows the programmer to specify the alignment of the allocation. This fixes PR30658. llvm-svn: 285544
2016-10-31 13:37:48 +08:00
void test_alloca_with_align(int n) {
capture(__builtin_alloca_with_align(n, 64));
// CHECK: %[[arg:.*]] = alloca i8, i32 %{{.*}}, align 8
// CHECK: call void @capture(i8* %[[arg]])
}