| // RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s |
| // RUN: %clang_cc1 -triple i386-mingw32 -fms-extensions -emit-llvm -o - %s | FileCheck %s |
| |
| int nonconst(void); |
| int isconst(void) __attribute__((const)); |
| int ispure(void) __attribute__((pure)); |
| |
| // CHECK-LABEL: @test1 |
| int test1(int *a, int i) { |
| // CHECK: store i32* %a, i32** [[A_ADDR:%.+]], align |
| // CHECK: [[A:%.+]] = load i32*, i32** [[A_ADDR]] |
| // CHECK: [[CMP:%.+]] = icmp ne i32* [[A]], null |
| // CHECK: call void @llvm.assume(i1 [[CMP]]) |
| |
| // CHECK: [[CALL:%.+]] = call i32 @isconst() |
| // CHECK: [[BOOL:%.+]] = icmp ne i32 [[CALL]], 0 |
| // CHECK: call void @llvm.assume(i1 [[BOOL]]) |
| |
| // CHECK: [[CALLPURE:%.+]] = call i32 @ispure() |
| // CHECK: [[BOOLPURE:%.+]] = icmp ne i32 [[CALLPURE]], 0 |
| // CHECK: call void @llvm.assume(i1 [[BOOLPURE]]) |
| #ifdef _MSC_VER |
| __assume(a != 0) |
| __assume(isconst()); |
| __assume(ispure()); |
| #else |
| __builtin_assume(a != 0); |
| __builtin_assume(isconst()); |
| __builtin_assume(ispure()); |
| #endif |
| |
| // Nothing is generated for an assume with side effects... |
| // CHECK-NOT: load i32*, i32** %i.addr |
| // CHECK-NOT: call void @llvm.assume |
| // CHECK-NOT: call i32 @nonconst() |
| #ifdef _MSC_VER |
| __assume(++i != 0) |
| __assume(nonconst()); |
| #else |
| __builtin_assume(++i != 0); |
| __builtin_assume(nonconst()); |
| #endif |
| |
| return a[0]; |
| } |
| |
