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1// RUN: %clang_cc1 -triple x86_64 -emit-llvm %s -o - -fwrapv -fsanitize=signed-integer-overflow | FileCheck %s --check-prefix=WRAPV2// RUN: %clang_cc1 -triple x86_64 -emit-llvm %s -o - -ftrapv | FileCheck %s --check-prefixes=BOTH-TRAP,TRAPV3// RUN: %clang_cc1 -triple x86_64 -emit-llvm %s -o - -fsanitize=signed-integer-overflow | FileCheck %s --check-prefixes=BOTH-TRAP,CATCH_UB4// COM: TODO: Support -ftrapv-handler.5 6extern int abs(int x);7 8int absi(int x) {9// WRAPV: [[ABS:%.*]] = call i32 @llvm.abs.i32(i32 %0, i1 false)10// WRAPV-NEXT: ret i32 [[ABS]]11//12// BOTH-TRAP: [[NEG:%.*]] = call { i32, i1 } @llvm.ssub.with.overflow.i32(i32 0, i32 [[X:%.*]])13// BOTH-TRAP: [[NEGV:%.*]] = extractvalue { i32, i1 } [[NEG]], 014// BOTH-TRAP: [[OFL:%.*]] = extractvalue { i32, i1 } [[NEG]], 115// BOTH-TRAP: [[NOFL:%.*]] = xor i1 [[OFL]], true16// BOTH-TRAP: br i1 [[NOFL]], label %[[CONT:.*]], label %[[TRAP:[a-zA-Z_.]*]]17// BOTH-TRAP: [[TRAP]]:18// TRAPV-NEXT: llvm.ubsantrap19// CATCH_UB: @__ubsan_handle_negate_overflow20// BOTH-TRAP-NEXT: unreachable21// BOTH-TRAP: [[CONT]]:22// BOTH-TRAP-NEXT: [[ABSCOND:%.*]] = icmp slt i32 [[X]], 023// BOTH-TRAP-NEXT: select i1 [[ABSCOND]], i32 [[NEGV]], i32 [[X]]24 return abs(x);25}26 27int babsi(int x) {28// WRAPV: [[ABS:%.*]] = call i32 @llvm.abs.i32(i32 %0, i1 false)29// WRAPV-NEXT: ret i32 [[ABS]]30//31// BOTH-TRAP: [[NEG:%.*]] = call { i32, i1 } @llvm.ssub.with.overflow.i32(i32 0, i32 [[X:%.*]])32// BOTH-TRAP: [[NEGV:%.*]] = extractvalue { i32, i1 } [[NEG]], 033// BOTH-TRAP: [[OFL:%.*]] = extractvalue { i32, i1 } [[NEG]], 134// BOTH-TRAP: [[NOFL:%.*]] = xor i1 [[OFL]], true35// BOTH-TRAP: br i1 [[NOFL]], label %[[CONT:.*]], label %[[TRAP:[a-zA-Z_.]*]]36// BOTH-TRAP: [[TRAP]]:37// TRAPV-NEXT: llvm.ubsantrap38// CATCH_UB: @__ubsan_handle_negate_overflow39// BOTH-TRAP-NEXT: unreachable40// BOTH-TRAP: [[CONT]]:41// BOTH-TRAP-NEXT: [[ABSCOND:%.*]] = icmp slt i32 [[X]], 042// BOTH-TRAP-NEXT: select i1 [[ABSCOND]], i32 [[NEGV]], i32 [[X]]43 return __builtin_abs(x);44}45