6b3351792c
For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie
and COFF, but not for Mach-O. This nuance causes unneeded binary format differences.
This patch replaces (function) `define ` with `define{{.*}} `,
(variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} `
if there is an explicit linkage.
* Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar.
* Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
35 lines
806 B
C++
35 lines
806 B
C++
// RUN: %clang_cc1 -std=c++11 -triple x86_64-apple-darwin10 -emit-llvm -o - %s -fsanitize=bool,enum | FileCheck %s
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enum E {
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a = 1,
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b = 2,
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c = 3
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};
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struct S {
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E e1 : 10;
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};
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// CHECK-LABEL: define{{.*}} i32 @_Z4loadP1S
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E load(S *s) {
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// CHECK: [[LOAD:%.*]] = load i16, i16* {{.*}}
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// CHECK: [[CLEAR:%.*]] = and i16 [[LOAD]], 1023
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// CHECK: [[CAST:%.*]] = zext i16 [[CLEAR]] to i32
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// CHECK: icmp ule i32 [[CAST]], 3, !nosanitize
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// CHECK: call void @__ubsan_handle_load_invalid_value
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return s->e1;
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}
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struct Bool {
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bool b1 : 1;
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bool b2 : 7;
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bool b3 : 16;
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};
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// CHECK-LABEL: define{{.*}} zeroext i1 @_Z13load_cpp_boolP4Bool
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bool load_cpp_bool(Bool *b) {
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// CHECK-NOT: call void @__ubsan_handle_load_invalid_value
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// CHECK-NOT: !nosanitize
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return b->b1 || b->b2 || b->b3;
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}
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