| // RUN: %clang_cc1 -triple x86_64 -emit-llvm %s -o - -fwrapv -fsanitize=signed-integer-overflow | FileCheck %s --check-prefix=WRAPV |
| // RUN: %clang_cc1 -triple x86_64 -emit-llvm %s -o - -ftrapv | FileCheck %s --check-prefixes=BOTH-TRAP,TRAPV |
| // RUN: %clang_cc1 -triple x86_64 -emit-llvm %s -o - -fsanitize=signed-integer-overflow | FileCheck %s --check-prefixes=BOTH-TRAP,CATCH_UB |
| // COM: TODO: Support -ftrapv-handler. |
| |
| extern int abs(int x); |
| |
| int absi(int x) { |
| // WRAPV: [[ABS:%.*]] = call i32 @llvm.abs.i32(i32 %0, i1 false) |
| // WRAPV-NEXT: ret i32 [[ABS]] |
| // |
| // BOTH-TRAP: [[NEG:%.*]] = call { i32, i1 } @llvm.ssub.with.overflow.i32(i32 0, i32 [[X:%.*]]) |
| // BOTH-TRAP: [[NEGV:%.*]] = extractvalue { i32, i1 } [[NEG]], 0 |
| // BOTH-TRAP: [[OFL:%.*]] = extractvalue { i32, i1 } [[NEG]], 1 |
| // BOTH-TRAP: [[NOFL:%.*]] = xor i1 [[OFL]], true |
| // BOTH-TRAP: br i1 [[NOFL]], label %[[CONT:.*]], label %[[TRAP:[a-zA-Z_.]*]] |
| // BOTH-TRAP: [[TRAP]]: |
| // TRAPV-NEXT: llvm.ubsantrap |
| // CATCH_UB: @__ubsan_handle_negate_overflow |
| // BOTH-TRAP-NEXT: unreachable |
| // BOTH-TRAP: [[CONT]]: |
| // BOTH-TRAP-NEXT: [[ABSCOND:%.*]] = icmp slt i32 [[X]], 0 |
| // BOTH-TRAP-NEXT: select i1 [[ABSCOND]], i32 [[NEGV]], i32 [[X]] |
| return abs(x); |
| } |
| |
| int babsi(int x) { |
| // WRAPV: [[ABS:%.*]] = call i32 @llvm.abs.i32(i32 %0, i1 false) |
| // WRAPV-NEXT: ret i32 [[ABS]] |
| // |
| // BOTH-TRAP: [[NEG:%.*]] = call { i32, i1 } @llvm.ssub.with.overflow.i32(i32 0, i32 [[X:%.*]]) |
| // BOTH-TRAP: [[NEGV:%.*]] = extractvalue { i32, i1 } [[NEG]], 0 |
| // BOTH-TRAP: [[OFL:%.*]] = extractvalue { i32, i1 } [[NEG]], 1 |
| // BOTH-TRAP: [[NOFL:%.*]] = xor i1 [[OFL]], true |
| // BOTH-TRAP: br i1 [[NOFL]], label %[[CONT:.*]], label %[[TRAP:[a-zA-Z_.]*]] |
| // BOTH-TRAP: [[TRAP]]: |
| // TRAPV-NEXT: llvm.ubsantrap |
| // CATCH_UB: @__ubsan_handle_negate_overflow |
| // BOTH-TRAP-NEXT: unreachable |
| // BOTH-TRAP: [[CONT]]: |
| // BOTH-TRAP-NEXT: [[ABSCOND:%.*]] = icmp slt i32 [[X]], 0 |
| // BOTH-TRAP-NEXT: select i1 [[ABSCOND]], i32 [[NEGV]], i32 [[X]] |
| return __builtin_abs(x); |
| } |