| Sasa Stankovic | 5fddf61 | 2014-03-10 20:34:23 +0000 | [diff] [blame] | 1 | ; RUN: llc -filetype=asm -mtriple=mipsel-none-linux -relocation-model=static \ |
| 2 | ; RUN: -O3 < %s | FileCheck %s |
| 3 | |
| 4 | ; RUN: llc -filetype=asm -mtriple=mipsel-none-nacl -relocation-model=static \ |
| 5 | ; RUN: -O3 < %s | FileCheck %s -check-prefix=CHECK-NACL |
| 6 | |
| 7 | @x = global i32 0, align 4 |
| 8 | declare void @f1(i32) |
| 9 | declare void @f2() |
| 10 | |
| 11 | |
| 12 | define void @test1() { |
| 13 | %1 = load i32* @x, align 4 |
| 14 | call void @f1(i32 %1) |
| 15 | ret void |
| 16 | |
| 17 | |
| 18 | ; CHECK-LABEL: test1 |
| 19 | |
| 20 | ; We first make sure that for non-NaCl targets branch-delay slot contains |
| 21 | ; dangerous instructions. |
| 22 | |
| 23 | ; Check that branch-delay slot is used to load argument from x before function |
| 24 | ; call. |
| 25 | |
| 26 | ; CHECK: jal |
| 27 | ; CHECK-NEXT: lw $4, %lo(x)(${{[0-9]+}}) |
| 28 | |
| 29 | ; Check that branch-delay slot is used for adjusting sp before return. |
| 30 | |
| 31 | ; CHECK: jr $ra |
| 32 | ; CHECK-NEXT: addiu $sp, $sp, {{[0-9]+}} |
| 33 | |
| 34 | |
| 35 | ; For NaCl, check that branch-delay slot doesn't contain dangerous instructions. |
| 36 | |
| 37 | ; CHECK-NACL: jal |
| 38 | ; CHECK-NACL-NEXT: nop |
| 39 | |
| 40 | ; CHECK-NACL: jr $ra |
| 41 | ; CHECK-NACL-NEXT: nop |
| 42 | } |
| 43 | |
| 44 | |
| 45 | define void @test2() { |
| 46 | store i32 1, i32* @x, align 4 |
| 47 | tail call void @f2() |
| 48 | ret void |
| 49 | |
| 50 | |
| 51 | ; CHECK-LABEL: test2 |
| 52 | |
| 53 | ; Check that branch-delay slot is used for storing to x before function call. |
| 54 | |
| 55 | ; CHECK: jal |
| 56 | ; CHECK-NEXT: sw ${{[0-9]+}}, %lo(x)(${{[0-9]+}}) |
| 57 | |
| 58 | ; Check that branch-delay slot is used for adjusting sp before return. |
| 59 | |
| 60 | ; CHECK: jr $ra |
| 61 | ; CHECK-NEXT: addiu $sp, $sp, {{[0-9]+}} |
| 62 | |
| 63 | |
| 64 | ; For NaCl, check that branch-delay slot doesn't contain dangerous instructions. |
| 65 | |
| 66 | ; CHECK-NACL: jal |
| 67 | ; CHECK-NACL-NEXT: nop |
| 68 | |
| 69 | ; CHECK-NACL: jr $ra |
| 70 | ; CHECK-NACL-NEXT: nop |
| 71 | } |