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).
130 lines
4.4 KiB
LLVM
130 lines
4.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; When we accept small parameters on Windows, make sure we do not assume they
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; are zero or sign extended in memory or in registers.
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; RUN: llc < %s -mtriple=x86_64-windows-msvc | FileCheck %s --check-prefix=WIN64
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; RUN: llc < %s -mtriple=x86_64-windows-gnu | FileCheck %s --check-prefix=WIN64
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; RUN: llc < %s -mtriple=i686-windows-msvc | FileCheck %s --check-prefix=WIN32-MSVC
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; RUN: llc < %s -mtriple=i686-windows-gnu | FileCheck %s --check-prefix=WIN32-GNU
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define void @call() {
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; WIN64-LABEL: call:
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; WIN64: # %bb.0: # %entry
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; WIN64-NEXT: subq $56, %rsp
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; WIN64-NEXT: .seh_stackalloc 56
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; WIN64-NEXT: .seh_endprologue
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; WIN64-NEXT: movw $6, {{[0-9]+}}(%rsp)
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; WIN64-NEXT: movb $5, {{[0-9]+}}(%rsp)
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; WIN64-NEXT: movb $1, %cl
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; WIN64-NEXT: movw $2, %dx
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; WIN64-NEXT: movb $3, %r8b
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; WIN64-NEXT: movw $4, %r9w
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; WIN64-NEXT: callq manyargs
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; WIN64-NEXT: nop
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; WIN64-NEXT: .seh_startepilogue
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; WIN64-NEXT: addq $56, %rsp
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; WIN64-NEXT: .seh_endepilogue
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; WIN64-NEXT: retq
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; WIN64-NEXT: .seh_endproc
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;
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; WIN32-MSVC-LABEL: call:
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; WIN32-MSVC: # %bb.0: # %entry
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; WIN32-MSVC-NEXT: pushl $6
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; WIN32-MSVC-NEXT: pushl $5
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; WIN32-MSVC-NEXT: pushl $4
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; WIN32-MSVC-NEXT: pushl $3
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; WIN32-MSVC-NEXT: pushl $2
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; WIN32-MSVC-NEXT: pushl $1
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; WIN32-MSVC-NEXT: calll _manyargs
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; WIN32-MSVC-NEXT: addl $24, %esp
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; WIN32-MSVC-NEXT: retl
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;
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; WIN32-GNU-LABEL: call:
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; WIN32-GNU: # %bb.0: # %entry
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; WIN32-GNU-NEXT: pushl $6
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; WIN32-GNU-NEXT: .cfi_adjust_cfa_offset 4
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; WIN32-GNU-NEXT: pushl $5
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; WIN32-GNU-NEXT: .cfi_adjust_cfa_offset 4
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; WIN32-GNU-NEXT: pushl $4
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; WIN32-GNU-NEXT: .cfi_adjust_cfa_offset 4
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; WIN32-GNU-NEXT: pushl $3
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; WIN32-GNU-NEXT: .cfi_adjust_cfa_offset 4
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; WIN32-GNU-NEXT: pushl $2
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; WIN32-GNU-NEXT: .cfi_adjust_cfa_offset 4
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; WIN32-GNU-NEXT: pushl $1
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; WIN32-GNU-NEXT: .cfi_adjust_cfa_offset 4
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; WIN32-GNU-NEXT: calll _manyargs
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; WIN32-GNU-NEXT: addl $24, %esp
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; WIN32-GNU-NEXT: .cfi_adjust_cfa_offset -24
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; WIN32-GNU-NEXT: retl
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entry:
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%rv = call i32 @manyargs(i8 1, i16 2, i8 3, i16 4, i8 5, i16 6)
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ret void
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}
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define i32 @manyargs(i8 %a, i16 %b, i8 %c, i16 %d, i8 %e, i16 %f) {
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; WIN64-LABEL: manyargs:
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; WIN64: # %bb.0: # %entry
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; WIN64-NEXT: movzwl {{[0-9]+}}(%rsp), %r10d
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; WIN64-NEXT: movzbl {{[0-9]+}}(%rsp), %r11d
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; WIN64-NEXT: movsbl %cl, %eax
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; WIN64-NEXT: movswl %dx, %ecx
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; WIN64-NEXT: addl %eax, %ecx
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; WIN64-NEXT: movzbl %r8b, %edx
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; WIN64-NEXT: movzwl %r9w, %eax
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; WIN64-NEXT: addl %edx, %eax
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; WIN64-NEXT: addl %ecx, %eax
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; WIN64-NEXT: addl %r11d, %eax
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; WIN64-NEXT: addl %r10d, %eax
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; WIN64-NEXT: retq
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;
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; WIN32-MSVC-LABEL: manyargs:
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; WIN32-MSVC: # %bb.0: # %entry
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; WIN32-MSVC-NEXT: pushl %esi
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; WIN32-MSVC-NEXT: movzwl {{[0-9]+}}(%esp), %eax
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; WIN32-MSVC-NEXT: movzbl {{[0-9]+}}(%esp), %ecx
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; WIN32-MSVC-NEXT: addl %eax, %ecx
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; WIN32-MSVC-NEXT: movzwl {{[0-9]+}}(%esp), %eax
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; WIN32-MSVC-NEXT: movzbl {{[0-9]+}}(%esp), %edx
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; WIN32-MSVC-NEXT: addl %eax, %edx
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; WIN32-MSVC-NEXT: movswl {{[0-9]+}}(%esp), %esi
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; WIN32-MSVC-NEXT: movsbl {{[0-9]+}}(%esp), %eax
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; WIN32-MSVC-NEXT: addl %esi, %eax
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; WIN32-MSVC-NEXT: addl %edx, %eax
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; WIN32-MSVC-NEXT: addl %ecx, %eax
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; WIN32-MSVC-NEXT: popl %esi
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; WIN32-MSVC-NEXT: retl
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;
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; WIN32-GNU-LABEL: manyargs:
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; WIN32-GNU: # %bb.0: # %entry
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; WIN32-GNU-NEXT: pushl %esi
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; WIN32-GNU-NEXT: .cfi_def_cfa_offset 8
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; WIN32-GNU-NEXT: .cfi_offset %esi, -8
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; WIN32-GNU-NEXT: movzwl {{[0-9]+}}(%esp), %eax
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; WIN32-GNU-NEXT: movzbl {{[0-9]+}}(%esp), %ecx
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; WIN32-GNU-NEXT: addl %eax, %ecx
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; WIN32-GNU-NEXT: movzwl {{[0-9]+}}(%esp), %eax
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; WIN32-GNU-NEXT: movzbl {{[0-9]+}}(%esp), %edx
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; WIN32-GNU-NEXT: addl %eax, %edx
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; WIN32-GNU-NEXT: movswl {{[0-9]+}}(%esp), %esi
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; WIN32-GNU-NEXT: movsbl {{[0-9]+}}(%esp), %eax
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; WIN32-GNU-NEXT: addl %esi, %eax
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; WIN32-GNU-NEXT: addl %edx, %eax
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; WIN32-GNU-NEXT: addl %ecx, %eax
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; WIN32-GNU-NEXT: popl %esi
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; WIN32-GNU-NEXT: retl
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entry:
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%aa = sext i8 %a to i32
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%bb = sext i16 %b to i32
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%cc = zext i8 %c to i32
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%dd = zext i16 %d to i32
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%ee = zext i8 %e to i32
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%ff = zext i16 %f to i32
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%t0 = add i32 %aa, %bb
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%t1 = add i32 %t0, %cc
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%t2 = add i32 %t1, %dd
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%t3 = add i32 %t2, %ee
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%t4 = add i32 %t3, %ff
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ret i32 %t4
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}
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