5a88dffc40
Summary: This PR simply changes the behavior of the `wchar_size` flag. Currently, we emit this in all cases for all targets. This causes problems during LLVM-IR linking, specifically because this would vary between Linux and Windows in unintuitive ways. Now we have an llvm::Triple helper to determine the size from the known values. The module flag will only be emitted if these do not match (indicating a non-standard environment). In addition to fixing AMDGCN bitcode linking, this also means we don't need to bloat *every* IR module compiled by clang with this flag. The changed tests reflects this, one less unnecessary piece of metadata.
23 lines
511 B
C
23 lines
511 B
C
// RUN: %clang_cc1 -triple s390x-ibm-linux -emit-llvm -fzvector -o - %s 2>&1 \
|
|
// RUN: | FileCheck %s
|
|
//
|
|
// Test the emission of the "s390x-visible-vector-ABI" module flag.
|
|
|
|
// Passing a single element struct containing a narrow (8 byte) vector element.
|
|
|
|
typedef __attribute__((vector_size(8))) int v2i32;
|
|
|
|
struct S {
|
|
v2i32 B;
|
|
};
|
|
|
|
void bar(struct S Arg);
|
|
|
|
void foo() {
|
|
struct S Var = {{0, 0}};
|
|
bar(Var);
|
|
}
|
|
|
|
//CHECK: !llvm.module.flags = !{!0}
|
|
//CHECK: !0 = !{i32 2, !"s390x-visible-vector-ABI", i32 1}
|