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https://github.com/Gericom/teak-llvm.git
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0392cf892f
Summary: We did a great job getting this wrong: - We messed up which LLVM IR types to use for arguments and return values. The optimized libcalls use integer types for values. Clang attempted to use the IR type which corresponds to the value passed in instead of using an appropriately sized integer type. This would result in violations of the ABI for, as an example, floating point types. - We didn't bother recording the result of the atomic libcall in the destination memory. Instead, call the functions with arguments matching the type of the libcall prototype's parameters. This fixes PR20780. Differential Revision: http://reviews.llvm.org/D5098 llvm-svn: 216714
38 lines
1.5 KiB
C
38 lines
1.5 KiB
C
// RUN: %clang_cc1 < %s -triple armv5e-none-linux-gnueabi -emit-llvm -O1 | FileCheck %s
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enum memory_order {
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memory_order_relaxed, memory_order_consume, memory_order_acquire,
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memory_order_release, memory_order_acq_rel, memory_order_seq_cst
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};
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int *test_c11_atomic_fetch_add_int_ptr(_Atomic(int *) *p) {
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// CHECK: test_c11_atomic_fetch_add_int_ptr
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// CHECK: {{%[^ ]*}} = tail call i32 @__atomic_fetch_add_4(i8* {{%[0-9]+}}, i32 12, i32 5)
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return __c11_atomic_fetch_add(p, 3, memory_order_seq_cst);
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}
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int *test_c11_atomic_fetch_sub_int_ptr(_Atomic(int *) *p) {
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// CHECK: test_c11_atomic_fetch_sub_int_ptr
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// CHECK: {{%[^ ]*}} = tail call i32 @__atomic_fetch_sub_4(i8* {{%[0-9]+}}, i32 20, i32 5)
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return __c11_atomic_fetch_sub(p, 5, memory_order_seq_cst);
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}
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int test_c11_atomic_fetch_add_int(_Atomic(int) *p) {
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// CHECK: test_c11_atomic_fetch_add_int
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// CHECK: {{%[^ ]*}} = tail call i32 @__atomic_fetch_add_4(i8* {{%[0-9]+}}, i32 3, i32 5)
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return __c11_atomic_fetch_add(p, 3, memory_order_seq_cst);
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}
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int test_c11_atomic_fetch_sub_int(_Atomic(int) *p) {
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// CHECK: test_c11_atomic_fetch_sub_int
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// CHECK: {{%[^ ]*}} = tail call i32 @__atomic_fetch_sub_4(i8* {{%[0-9]+}}, i32 5, i32 5)
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return __c11_atomic_fetch_sub(p, 5, memory_order_seq_cst);
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}
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int *fp2a(int **p) {
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// CHECK: @fp2a
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// CHECK: {{%[^ ]*}} = tail call i32 @__atomic_fetch_sub_4(i8* {{%[0-9]+}}, i32 4, i32 0)
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// Note, the GNU builtins do not multiply by sizeof(T)!
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return __atomic_fetch_sub(p, 4, memory_order_relaxed);
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}
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