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.
107 lines
3.5 KiB
C
107 lines
3.5 KiB
C
// RUN: %clang_cc1 -triple x86_64-apple-darwin %s -emit-llvm -o - | FileCheck %s --check-prefix=DEFAULT
|
|
// RUN: %clang_cc1 -triple x86_64-apple-darwin %s -emit-llvm -o - -fwrapv | FileCheck %s --check-prefix=WRAPV
|
|
// RUN: %clang_cc1 -triple x86_64-apple-darwin %s -emit-llvm -o - -ftrapv | FileCheck %s --check-prefix=TRAPV
|
|
// RUN: %clang_cc1 -triple x86_64-apple-darwin %s -emit-llvm -o - -fsanitize=signed-integer-overflow | FileCheck %s --check-prefix=CATCH_UB
|
|
// RUN: %clang_cc1 -triple x86_64-apple-darwin %s -emit-llvm -o - -ftrapv -ftrapv-handler foo | FileCheck %s --check-prefix=TRAPV_HANDLER
|
|
|
|
|
|
// Tests for signed integer overflow stuff.
|
|
// rdar://7432000 rdar://7221421
|
|
void test1() {
|
|
// DEFAULT-LABEL: define{{.*}} void @test1
|
|
// WRAPV-LABEL: define{{.*}} void @test1
|
|
// TRAPV-LABEL: define{{.*}} void @test1
|
|
extern volatile int f11G, a, b;
|
|
|
|
// DEFAULT: add nsw i32
|
|
// WRAPV: add i32
|
|
// TRAPV: llvm.sadd.with.overflow.i32
|
|
// CATCH_UB: llvm.sadd.with.overflow.i32
|
|
// TRAPV_HANDLER: foo(
|
|
f11G = a + b;
|
|
|
|
// DEFAULT: sub nsw i32
|
|
// WRAPV: sub i32
|
|
// TRAPV: llvm.ssub.with.overflow.i32
|
|
// CATCH_UB: llvm.ssub.with.overflow.i32
|
|
// TRAPV_HANDLER: foo(
|
|
f11G = a - b;
|
|
|
|
// DEFAULT: mul nsw i32
|
|
// WRAPV: mul i32
|
|
// TRAPV: llvm.smul.with.overflow.i32
|
|
// CATCH_UB: llvm.smul.with.overflow.i32
|
|
// TRAPV_HANDLER: foo(
|
|
f11G = a * b;
|
|
|
|
// DEFAULT: sub nsw i32 0,
|
|
// WRAPV: sub i32 0,
|
|
// TRAPV: llvm.ssub.with.overflow.i32(i32 0
|
|
// CATCH_UB: llvm.ssub.with.overflow.i32(i32 0
|
|
// TRAPV_HANDLER: foo(
|
|
f11G = -a;
|
|
|
|
// PR7426 - Overflow checking for increments.
|
|
|
|
// DEFAULT: add nsw i32 {{.*}}, 1
|
|
// WRAPV: add i32 {{.*}}, 1
|
|
// TRAPV: llvm.sadd.with.overflow.i32({{.*}}, i32 1)
|
|
// CATCH_UB: llvm.sadd.with.overflow.i32({{.*}}, i32 1)
|
|
// TRAPV_HANDLER: foo(
|
|
++a;
|
|
|
|
// DEFAULT: add nsw i32 {{.*}}, -1
|
|
// WRAPV: add i32 {{.*}}, -1
|
|
// TRAPV: llvm.ssub.with.overflow.i32({{.*}}, i32 1)
|
|
// CATCH_UB: llvm.ssub.with.overflow.i32({{.*}}, i32 1)
|
|
// TRAPV_HANDLER: foo(
|
|
--a;
|
|
|
|
// -fwrapv should turn off inbounds for GEP's, PR9256
|
|
extern int* P;
|
|
++P;
|
|
// DEFAULT: getelementptr inbounds i32, i32*
|
|
// WRAPV: getelementptr i32, i32*
|
|
// TRAPV: getelementptr inbounds i32, i32*
|
|
// CATCH_UB: getelementptr inbounds i32, i32*
|
|
|
|
// PR9350: char pre-increment never overflows.
|
|
extern volatile signed char PR9350_char_inc;
|
|
// DEFAULT: add i8 {{.*}}, 1
|
|
// WRAPV: add i8 {{.*}}, 1
|
|
// TRAPV: add i8 {{.*}}, 1
|
|
// CATCH_UB: add i8 {{.*}}, 1
|
|
++PR9350_char_inc;
|
|
|
|
// PR9350: char pre-decrement never overflows.
|
|
extern volatile signed char PR9350_char_dec;
|
|
// DEFAULT: add i8 {{.*}}, -1
|
|
// WRAPV: add i8 {{.*}}, -1
|
|
// TRAPV: add i8 {{.*}}, -1
|
|
// CATCH_UB: add i8 {{.*}}, -1
|
|
--PR9350_char_dec;
|
|
|
|
// PR9350: short pre-increment never overflows.
|
|
extern volatile signed short PR9350_short_inc;
|
|
// DEFAULT: add i16 {{.*}}, 1
|
|
// WRAPV: add i16 {{.*}}, 1
|
|
// TRAPV: add i16 {{.*}}, 1
|
|
// CATCH_UB: add i16 {{.*}}, 1
|
|
++PR9350_short_inc;
|
|
|
|
// PR9350: short pre-decrement never overflows.
|
|
extern volatile signed short PR9350_short_dec;
|
|
// DEFAULT: add i16 {{.*}}, -1
|
|
// WRAPV: add i16 {{.*}}, -1
|
|
// TRAPV: add i16 {{.*}}, -1
|
|
// CATCH_UB: add i16 {{.*}}, -1
|
|
--PR9350_short_dec;
|
|
|
|
// PR24256: don't instrument __builtin_frame_address.
|
|
__builtin_frame_address(0 + 0);
|
|
// DEFAULT: call i8* @llvm.frameaddress.p0i8(i32 0)
|
|
// WRAPV: call i8* @llvm.frameaddress.p0i8(i32 0)
|
|
// TRAPV: call i8* @llvm.frameaddress.p0i8(i32 0)
|
|
// CATCH_UB: call i8* @llvm.frameaddress.p0i8(i32 0)
|
|
}
|