| Hal Finkel | bcc0608 | 2014-09-07 22:58:14 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s |
| Hal Finkel | 3e49fda | 2014-07-16 22:44:54 +0000 | [diff] [blame] | 2 | // RUN: %clang_cc1 -triple i386-mingw32 -fms-extensions -emit-llvm -o - %s | FileCheck %s |
| 3 | |
| 4 | // CHECK-LABEL: @test1 |
| Hal Finkel | bcc0608 | 2014-09-07 22:58:14 +0000 | [diff] [blame] | 5 | int test1(int *a, int i) { |
| NAKAMURA Takumi | 4b04c11 | 2014-09-08 01:12:55 +0000 | [diff] [blame] | 6 | // CHECK: store i32* %a, i32** [[A_ADDR:%.+]], align |
| David Blaikie | a953f28 | 2015-02-27 21:19:58 +0000 | [diff] [blame] | 7 | // CHECK: [[A:%.+]] = load i32*, i32** [[A_ADDR]] |
| NAKAMURA Takumi | 4b04c11 | 2014-09-08 01:12:55 +0000 | [diff] [blame] | 8 | // CHECK: [[CMP:%.+]] = icmp ne i32* [[A]], null |
| 9 | // CHECK: call void @llvm.assume(i1 [[CMP]]) |
| Hal Finkel | bcc0608 | 2014-09-07 22:58:14 +0000 | [diff] [blame] | 10 | #ifdef _MSC_VER |
| 11 | __assume(a != 0) |
| 12 | #else |
| 13 | __builtin_assume(a != 0); |
| 14 | #endif |
| 15 | |
| 16 | // Nothing is generated for an assume with side effects... |
| David Blaikie | a953f28 | 2015-02-27 21:19:58 +0000 | [diff] [blame] | 17 | // CHECK-NOT: load i32*, i32** %i.addr |
| Hal Finkel | bcc0608 | 2014-09-07 22:58:14 +0000 | [diff] [blame] | 18 | // CHECK-NOT: call void @llvm.assume |
| 19 | #ifdef _MSC_VER |
| 20 | __assume(++i != 0) |
| 21 | #else |
| 22 | __builtin_assume(++i != 0); |
| 23 | #endif |
| 24 | |
| Hal Finkel | 3e49fda | 2014-07-16 22:44:54 +0000 | [diff] [blame] | 25 | return a[0]; |
| 26 | } |
| 27 | |