1 ; RUN: llc -mtriple=x86_64-unknown-unknown < %s | FileCheck %s 2 ; RUN: llc -mtriple=x86_64-unknown-unknown -O0 < %s | FileCheck %s -check-prefix=CHECK0 3 4 %struct.interrupt_frame = type { i64, i64, i64, i64, i64 } 5 6 @llvm.used = appending global [4 x i8*] [i8* bitcast (void (%struct.interrupt_frame*)* @test_isr_no_ecode to i8*), i8* bitcast (void (%struct.interrupt_frame*, i64)* @test_isr_ecode to i8*), i8* bitcast (void (%struct.interrupt_frame*, i64)* @test_isr_clobbers to i8*), i8* bitcast (void (%struct.interrupt_frame*)* @test_isr_x87 to i8*)], section "llvm.metadata" 7 8 ; Spills rax, putting original esp at +8. 9 ; No stack adjustment if declared with no error code 10 define x86_intrcc void @test_isr_no_ecode(%struct.interrupt_frame* %frame) { 11 ; CHECK-LABEL: test_isr_no_ecode: 12 ; CHECK: pushq %rax 13 ; CHECK: movq 24(%rsp), %rax 14 ; CHECK: popq %rax 15 ; CHECK: iretq 16 ; CHECK0-LABEL: test_isr_no_ecode: 17 ; CHECK0: pushq %rax 18 ; CHECK0: leaq 8(%rsp), %rax 19 ; CHECK0: movq 16(%rax), %rax 20 ; CHECK0: popq %rax 21 ; CHECK0: iretq 22 %pflags = getelementptr inbounds %struct.interrupt_frame, %struct.interrupt_frame* %frame, i32 0, i32 2 23 %flags = load i64, i64* %pflags, align 4 24 call void asm sideeffect "", "r"(i64 %flags) 25 ret void 26 } 27 28 ; Spills rax and rcx, putting original rsp at +16. Stack is adjusted up another 8 bytes 29 ; before return, popping the error code. 30 define x86_intrcc void @test_isr_ecode(%struct.interrupt_frame* %frame, i64 %ecode) { 31 ; CHECK-LABEL: test_isr_ecode 32 ; CHECK: pushq %rax 33 ; CHECK: pushq %rcx 34 ; CHECK: movq 16(%rsp), %rax 35 ; CHECK: movq 40(%rsp), %rcx 36 ; CHECK: popq %rcx 37 ; CHECK: popq %rax 38 ; CHECK: addq $8, %rsp 39 ; CHECK: iretq 40 ; CHECK0-LABEL: test_isr_ecode 41 ; CHECK0: pushq %rax 42 ; CHECK0: pushq %rcx 43 ; CHECK0: movq 16(%rsp), %rax 44 ; CHECK0: leaq 24(%rsp), %rcx 45 ; CHECK0: movq 16(%rcx), %rcx 46 ; CHECK0: popq %rcx 47 ; CHECK0: popq %rax 48 ; CHECK0: addq $8, %rsp 49 ; CHECK0: iretq 50 %pflags = getelementptr inbounds %struct.interrupt_frame, %struct.interrupt_frame* %frame, i32 0, i32 2 51 %flags = load i64, i64* %pflags, align 4 52 call void asm sideeffect "", "r,r"(i64 %flags, i64 %ecode) 53 ret void 54 } 55 56 ; All clobbered registers must be saved 57 define x86_intrcc void @test_isr_clobbers(%struct.interrupt_frame* %frame, i64 %ecode) { 58 call void asm sideeffect "", "~{rax},~{rbx},~{rbp},~{r11},~{xmm0}"() 59 ; CHECK-LABEL: test_isr_clobbers 60 ; CHECK-SSE-NEXT: pushq %rax 61 ; CHECK-SSE-NEXT; pushq %r11 62 ; CHECK-SSE-NEXT: pushq %rbp 63 ; CHECK-SSE-NEXT: pushq %rbx 64 ; CHECK-SSE-NEXT: movaps %xmm0 65 ; CHECK-SSE-NEXT: movaps %xmm0 66 ; CHECK-SSE-NEXT: popq %rbx 67 ; CHECK-SSE-NEXT: popq %rbp 68 ; CHECK-SSE-NEXT: popq %r11 69 ; CHECK-SSE-NEXT: popq %rax 70 ; CHECK-SSE-NEXT: addq $8, %rsp 71 ; CHECK-SSE-NEXT: iretq 72 ; CHECK0-LABEL: test_isr_clobbers 73 ; CHECK0-SSE-NEXT: pushq %rax 74 ; CHECK0-SSE-NEXT; pushq %r11 75 ; CHECK0-SSE-NEXT: pushq %rbp 76 ; CHECK0-SSE-NEXT: pushq %rbx 77 ; CHECK0-SSE-NEXT: movaps %xmm0 78 ; CHECK0-SSE-NEXT: movaps %xmm0 79 ; CHECK0-SSE-NEXT: popq %rbx 80 ; CHECK0-SSE-NEXT: popq %rbp 81 ; CHECK0-SSE-NEXT: popq %r11 82 ; CHECK0-SSE-NEXT: popq %rax 83 ; CHECK0-SSE-NEXT: addq $8, %rsp 84 ; CHECK0-SSE-NEXT: iretq 85 ret void 86 } 87 88 @f80 = common global x86_fp80 0xK00000000000000000000, align 4 89 90 ; Test that the presence of x87 does not crash the FP stackifier 91 define x86_intrcc void @test_isr_x87(%struct.interrupt_frame* %frame) { 92 ; CHECK-LABEL: test_isr_x87 93 ; CHECK-DAG: fldt f80 94 ; CHECK-DAG: fld1 95 ; CHECK: faddp 96 ; CHECK-NEXT: fstpt f80 97 ; CHECK-NEXT: iretq 98 entry: 99 %ld = load x86_fp80, x86_fp80* @f80, align 4 100 %add = fadd x86_fp80 %ld, 0xK3FFF8000000000000000 101 store x86_fp80 %add, x86_fp80* @f80, align 4 102 ret void 103 } 104
