b3458fdec5
Windows x64 Unwind V2 adds epilog information to unwind data: specifically, the length of the epilog and the offset of each epilog. The first step to do this is to add markers to the beginning and end of each epilog when generating Windows x64 code. I've modelled this after how LLVM was marking ARM and AArch64 epilogs in Windows (and unified the code between the three).
286 lines
8.3 KiB
LLVM
286 lines
8.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=x86_64-pc-win32 | FileCheck %s
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; RUN: llc < %s -mtriple=x86_64-pc-win32 -mattr=+sahf | FileCheck %s
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define i32 @f1(i32 %p1, i32 %p2, i32 %p3, i32 %p4, i32 %p5) "frame-pointer"="all" {
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; CHECK-LABEL: f1:
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; CHECK: # %bb.0:
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; CHECK-NEXT: pushq %rbp
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; CHECK-NEXT: .seh_pushreg %rbp
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; CHECK-NEXT: movq %rsp, %rbp
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; CHECK-NEXT: .seh_setframe %rbp, 0
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; CHECK-NEXT: .seh_endprologue
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; CHECK-NEXT: movl 48(%rbp), %eax
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; CHECK-NEXT: .seh_startepilogue
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; CHECK-NEXT: popq %rbp
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: retq
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; CHECK-NEXT: .seh_endproc
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ret i32 %p5
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}
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define void @f2(i32 %p, ...) "frame-pointer"="all" {
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; CHECK-LABEL: f2:
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; CHECK: # %bb.0:
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; CHECK-NEXT: pushq %rbp
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; CHECK-NEXT: .seh_pushreg %rbp
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; CHECK-NEXT: pushq %rax
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; CHECK-NEXT: .seh_stackalloc 8
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; CHECK-NEXT: movq %rsp, %rbp
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; CHECK-NEXT: .seh_setframe %rbp, 0
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; CHECK-NEXT: .seh_endprologue
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; CHECK-NEXT: movq %rdx, 32(%rbp)
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; CHECK-NEXT: movq %r8, 40(%rbp)
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; CHECK-NEXT: movq %r9, 48(%rbp)
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; CHECK-NEXT: leaq 32(%rbp), %rax
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; CHECK-NEXT: movq %rax, (%rbp)
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; CHECK-NEXT: .seh_startepilogue
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; CHECK-NEXT: addq $8, %rsp
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; CHECK-NEXT: popq %rbp
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: retq
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; CHECK-NEXT: .seh_endproc
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%ap = alloca i8, align 8
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call void @llvm.va_start(ptr %ap)
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ret void
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}
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define ptr @f3() "frame-pointer"="all" {
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; CHECK-LABEL: f3:
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; CHECK: # %bb.0:
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; CHECK-NEXT: pushq %rbp
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; CHECK-NEXT: .seh_pushreg %rbp
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; CHECK-NEXT: movq %rsp, %rbp
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; CHECK-NEXT: .seh_setframe %rbp, 0
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; CHECK-NEXT: .seh_endprologue
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; CHECK-NEXT: movq 8(%rbp), %rax
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; CHECK-NEXT: .seh_startepilogue
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; CHECK-NEXT: popq %rbp
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: retq
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; CHECK-NEXT: .seh_endproc
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%ra = call ptr @llvm.returnaddress(i32 0)
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ret ptr %ra
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}
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define ptr @f4() "frame-pointer"="all" {
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; CHECK-LABEL: f4:
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; CHECK: # %bb.0:
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; CHECK-NEXT: pushq %rbp
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; CHECK-NEXT: .seh_pushreg %rbp
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; CHECK-NEXT: subq $304, %rsp # imm = 0x130
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; CHECK-NEXT: .seh_stackalloc 304
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; CHECK-NEXT: leaq {{[0-9]+}}(%rsp), %rbp
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; CHECK-NEXT: .seh_setframe %rbp, 128
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; CHECK-NEXT: .seh_endprologue
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; CHECK-NEXT: movq 184(%rbp), %rax
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; CHECK-NEXT: .seh_startepilogue
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; CHECK-NEXT: addq $304, %rsp # imm = 0x130
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; CHECK-NEXT: popq %rbp
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: retq
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; CHECK-NEXT: .seh_endproc
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alloca [300 x i8]
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%ra = call ptr @llvm.returnaddress(i32 0)
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ret ptr %ra
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}
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declare void @external(ptr)
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define void @f5() "frame-pointer"="all" {
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; CHECK-LABEL: f5:
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; CHECK: # %bb.0:
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; CHECK-NEXT: pushq %rbp
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; CHECK-NEXT: .seh_pushreg %rbp
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; CHECK-NEXT: subq $336, %rsp # imm = 0x150
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; CHECK-NEXT: .seh_stackalloc 336
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; CHECK-NEXT: leaq {{[0-9]+}}(%rsp), %rbp
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; CHECK-NEXT: .seh_setframe %rbp, 128
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; CHECK-NEXT: .seh_endprologue
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; CHECK-NEXT: leaq -92(%rbp), %rcx
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; CHECK-NEXT: callq external
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; CHECK-NEXT: nop
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; CHECK-NEXT: .seh_startepilogue
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; CHECK-NEXT: addq $336, %rsp # imm = 0x150
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; CHECK-NEXT: popq %rbp
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: retq
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; CHECK-NEXT: .seh_endproc
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%a = alloca [300 x i8]
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call void @external(ptr %a)
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ret void
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}
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define void @f6(i32 %p, ...) "frame-pointer"="all" {
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; CHECK-LABEL: f6:
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; CHECK: # %bb.0:
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; CHECK-NEXT: pushq %rbp
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; CHECK-NEXT: .seh_pushreg %rbp
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; CHECK-NEXT: subq $336, %rsp # imm = 0x150
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; CHECK-NEXT: .seh_stackalloc 336
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; CHECK-NEXT: leaq {{[0-9]+}}(%rsp), %rbp
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; CHECK-NEXT: .seh_setframe %rbp, 128
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; CHECK-NEXT: .seh_endprologue
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; CHECK-NEXT: leaq -92(%rbp), %rcx
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; CHECK-NEXT: callq external
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; CHECK-NEXT: nop
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; CHECK-NEXT: .seh_startepilogue
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; CHECK-NEXT: addq $336, %rsp # imm = 0x150
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; CHECK-NEXT: popq %rbp
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: retq
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; CHECK-NEXT: .seh_endproc
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%a = alloca [300 x i8]
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call void @external(ptr %a)
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ret void
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}
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define i32 @f7(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e) "frame-pointer"="all" {
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; CHECK-LABEL: f7:
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; CHECK: # %bb.0:
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; CHECK-NEXT: pushq %rbp
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; CHECK-NEXT: .seh_pushreg %rbp
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; CHECK-NEXT: subq $304, %rsp # imm = 0x130
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; CHECK-NEXT: .seh_stackalloc 304
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; CHECK-NEXT: leaq {{[0-9]+}}(%rsp), %rbp
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; CHECK-NEXT: .seh_setframe %rbp, 128
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; CHECK-NEXT: .seh_endprologue
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; CHECK-NEXT: andq $-64, %rsp
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; CHECK-NEXT: movl 224(%rbp), %eax
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; CHECK-NEXT: .seh_startepilogue
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; CHECK-NEXT: leaq 176(%rbp), %rsp
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; CHECK-NEXT: popq %rbp
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: retq
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; CHECK-NEXT: .seh_endproc
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alloca [300 x i8], align 64
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ret i32 %e
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}
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define i32 @f8(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e) "frame-pointer"="all" {
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; CHECK-LABEL: f8:
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; CHECK: # %bb.0:
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; CHECK-NEXT: pushq %rbp
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; CHECK-NEXT: .seh_pushreg %rbp
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; CHECK-NEXT: pushq %rsi
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; CHECK-NEXT: .seh_pushreg %rsi
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; CHECK-NEXT: pushq %rbx
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; CHECK-NEXT: .seh_pushreg %rbx
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; CHECK-NEXT: subq $352, %rsp # imm = 0x160
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; CHECK-NEXT: .seh_stackalloc 352
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; CHECK-NEXT: leaq {{[0-9]+}}(%rsp), %rbp
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; CHECK-NEXT: .seh_setframe %rbp, 128
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; CHECK-NEXT: .seh_endprologue
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; CHECK-NEXT: andq $-64, %rsp
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; CHECK-NEXT: movq %rsp, %rbx
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; CHECK-NEXT: movl 288(%rbp), %esi
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; CHECK-NEXT: movl %ecx, %eax
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; CHECK-NEXT: leaq 15(,%rax,4), %rax
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; CHECK-NEXT: andq $-16, %rax
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; CHECK-NEXT: callq __chkstk
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; CHECK-NEXT: subq %rax, %rsp
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; CHECK-NEXT: subq $32, %rsp
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; CHECK-NEXT: movq %rbx, %rcx
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; CHECK-NEXT: callq external
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; CHECK-NEXT: addq $32, %rsp
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; CHECK-NEXT: movl %esi, %eax
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; CHECK-NEXT: .seh_startepilogue
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; CHECK-NEXT: leaq 224(%rbp), %rsp
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; CHECK-NEXT: popq %rbx
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; CHECK-NEXT: popq %rsi
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; CHECK-NEXT: popq %rbp
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: retq
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; CHECK-NEXT: .seh_endproc
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%alloca = alloca [300 x i8], align 64
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alloca i32, i32 %a
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call void @external(ptr %alloca)
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ret i32 %e
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}
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define i64 @f9() {
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; CHECK-LABEL: f9:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: pushq %rbp
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; CHECK-NEXT: .seh_pushreg %rbp
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; CHECK-NEXT: movq %rsp, %rbp
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; CHECK-NEXT: .seh_setframe %rbp, 0
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; CHECK-NEXT: .seh_endprologue
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; CHECK-NEXT: pushfq
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; CHECK-NEXT: popq %rax
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; CHECK-NEXT: .seh_startepilogue
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; CHECK-NEXT: popq %rbp
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: retq
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; CHECK-NEXT: .seh_endproc
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entry:
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%call = call i64 @llvm.x86.flags.read.u64()
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ret i64 %call
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}
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declare i64 @dummy()
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define i64 @f10(ptr %foo, i64 %bar, i64 %baz) {
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; CHECK-LABEL: f10:
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; CHECK: # %bb.0:
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; CHECK-NEXT: pushq %rsi
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; CHECK-NEXT: .seh_pushreg %rsi
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; CHECK-NEXT: pushq %rbx
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; CHECK-NEXT: .seh_pushreg %rbx
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; CHECK-NEXT: subq $40, %rsp
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; CHECK-NEXT: .seh_stackalloc 40
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; CHECK-NEXT: .seh_endprologue
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; CHECK-NEXT: movq %rdx, %rsi
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; CHECK-NEXT: movq %rdx, %rax
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; CHECK-NEXT: lock cmpxchgq %r8, (%rcx)
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; CHECK-NEXT: sete %bl
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; CHECK-NEXT: callq dummy
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; CHECK-NEXT: testb %bl, %bl
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; CHECK-NEXT: cmoveq %rsi, %rax
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; CHECK-NEXT: .seh_startepilogue
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; CHECK-NEXT: addq $40, %rsp
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; CHECK-NEXT: popq %rbx
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; CHECK-NEXT: popq %rsi
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: retq
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; CHECK-NEXT: .seh_endproc
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%cx = cmpxchg ptr %foo, i64 %bar, i64 %baz seq_cst seq_cst
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%v = extractvalue { i64, i1 } %cx, 0
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%p = extractvalue { i64, i1 } %cx, 1
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%call = call i64 @dummy()
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%sel = select i1 %p, i64 %call, i64 %bar
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ret i64 %sel
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}
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define ptr @f11() "frame-pointer"="all" {
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; CHECK-LABEL: f11:
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; CHECK: # %bb.0:
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; CHECK-NEXT: pushq %rbp
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; CHECK-NEXT: .seh_pushreg %rbp
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; CHECK-NEXT: movq %rsp, %rbp
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; CHECK-NEXT: .seh_setframe %rbp, 0
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; CHECK-NEXT: .seh_endprologue
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; CHECK-NEXT: leaq 8(%rbp), %rax
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; CHECK-NEXT: .seh_startepilogue
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; CHECK-NEXT: popq %rbp
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: retq
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; CHECK-NEXT: .seh_endproc
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%aora = call ptr @llvm.addressofreturnaddress()
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ret ptr %aora
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}
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define ptr @f12() {
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; CHECK-LABEL: f12:
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; CHECK: # %bb.0:
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; CHECK-NEXT: movq %rsp, %rax
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; CHECK-NEXT: retq
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%aora = call ptr @llvm.addressofreturnaddress()
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ret ptr %aora
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}
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declare ptr @llvm.returnaddress(i32) nounwind readnone
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declare ptr @llvm.addressofreturnaddress() nounwind readnone
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declare i64 @llvm.x86.flags.read.u64()
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declare void @llvm.va_start(ptr) nounwind
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