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.
19 lines
487 B
C
19 lines
487 B
C
// RUN: %clang_cc1 -triple s390x-ibm-linux -emit-llvm -fzvector -o - %s 2>&1 \
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// RUN: | FileCheck %s
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//
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// Test the emission of the "s390x-visible-vector-ABI" module flag.
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// Call to varargs function via global pointer to pointer to function.
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typedef __attribute__((vector_size(16))) int v4i32;
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void (**bar)(int N, ...);
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void foo() {
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v4i32 Var = {0, 0, 0, 0};
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(**bar)(0, Var);
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}
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//CHECK: !llvm.module.flags = !{!0}
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//CHECK: !0 = !{i32 2, !"s390x-visible-vector-ABI", i32 1}
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