36c64af9d7
If we are going to write handler data (that is written as variable length data following after the unwind info in .xdata), we need to emit the handler data immediately, but for cases where no such info is going to be written, skip emitting it right away. (Unwind info for all remaining functions that hasn't gotten it emitted directly is emitted at the end.) This does slightly change the ordering of sections (triggering a bunch of updates to DebugInfo/COFF tests), but the change should be benign. This also matches GCC's assembly output, which doesn't output .seh_handlerdata unless it actually is needed. For ARM64, the unwind info can be packed into the runtime function entry itself (leaving no data in the .xdata section at all), but that can only be done if there's no follow-on data in the .xdata section. If emission of the unwind info is triggered via EmitWinEHHandlerData (or the .seh_handlerdata directive), which implicitly switches to the .xdata section, there's a chance of the caller wanting to pass further data there, so the packed format can't be used in that case. Differential Revision: https://reviews.llvm.org/D87448
267 lines
7.5 KiB
LLVM
267 lines
7.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
|
|
; RUN: llc < %s -mtriple=x86_64-pc-win32 | FileCheck %s --check-prefix=ALL --check-prefix=PUSHF
|
|
; RUN: llc < %s -mtriple=x86_64-pc-win32 -mattr=+sahf | FileCheck %s --check-prefix=ALL --check-prefix=SAHF
|
|
|
|
define i32 @f1(i32 %p1, i32 %p2, i32 %p3, i32 %p4, i32 %p5) "frame-pointer"="all" {
|
|
; ALL-LABEL: f1:
|
|
; ALL: # %bb.0:
|
|
; ALL-NEXT: pushq %rbp
|
|
; ALL-NEXT: .seh_pushreg %rbp
|
|
; ALL-NEXT: movq %rsp, %rbp
|
|
; ALL-NEXT: .seh_setframe %rbp, 0
|
|
; ALL-NEXT: .seh_endprologue
|
|
; ALL-NEXT: movl 48(%rbp), %eax
|
|
; ALL-NEXT: popq %rbp
|
|
; ALL-NEXT: retq
|
|
; ALL-NEXT: .seh_endproc
|
|
ret i32 %p5
|
|
}
|
|
|
|
define void @f2(i32 %p, ...) "frame-pointer"="all" {
|
|
; ALL-LABEL: f2:
|
|
; ALL: # %bb.0:
|
|
; ALL-NEXT: pushq %rbp
|
|
; ALL-NEXT: .seh_pushreg %rbp
|
|
; ALL-NEXT: pushq %rax
|
|
; ALL-NEXT: .seh_stackalloc 8
|
|
; ALL-NEXT: movq %rsp, %rbp
|
|
; ALL-NEXT: .seh_setframe %rbp, 0
|
|
; ALL-NEXT: .seh_endprologue
|
|
; ALL-NEXT: movq %rdx, 32(%rbp)
|
|
; ALL-NEXT: movq %r8, 40(%rbp)
|
|
; ALL-NEXT: movq %r9, 48(%rbp)
|
|
; ALL-NEXT: leaq 32(%rbp), %rax
|
|
; ALL-NEXT: movq %rax, (%rbp)
|
|
; ALL-NEXT: addq $8, %rsp
|
|
; ALL-NEXT: popq %rbp
|
|
; ALL-NEXT: retq
|
|
; ALL-NEXT: .seh_endproc
|
|
%ap = alloca i8, align 8
|
|
call void @llvm.va_start(i8* %ap)
|
|
ret void
|
|
}
|
|
|
|
define i8* @f3() "frame-pointer"="all" {
|
|
; ALL-LABEL: f3:
|
|
; ALL: # %bb.0:
|
|
; ALL-NEXT: pushq %rbp
|
|
; ALL-NEXT: .seh_pushreg %rbp
|
|
; ALL-NEXT: movq %rsp, %rbp
|
|
; ALL-NEXT: .seh_setframe %rbp, 0
|
|
; ALL-NEXT: .seh_endprologue
|
|
; ALL-NEXT: movq 8(%rbp), %rax
|
|
; ALL-NEXT: popq %rbp
|
|
; ALL-NEXT: retq
|
|
; ALL-NEXT: .seh_endproc
|
|
%ra = call i8* @llvm.returnaddress(i32 0)
|
|
ret i8* %ra
|
|
}
|
|
|
|
define i8* @f4() "frame-pointer"="all" {
|
|
; ALL-LABEL: f4:
|
|
; ALL: # %bb.0:
|
|
; ALL-NEXT: pushq %rbp
|
|
; ALL-NEXT: .seh_pushreg %rbp
|
|
; ALL-NEXT: subq $304, %rsp # imm = 0x130
|
|
; ALL-NEXT: .seh_stackalloc 304
|
|
; ALL-NEXT: leaq {{[0-9]+}}(%rsp), %rbp
|
|
; ALL-NEXT: .seh_setframe %rbp, 128
|
|
; ALL-NEXT: .seh_endprologue
|
|
; ALL-NEXT: movq 184(%rbp), %rax
|
|
; ALL-NEXT: addq $304, %rsp # imm = 0x130
|
|
; ALL-NEXT: popq %rbp
|
|
; ALL-NEXT: retq
|
|
; ALL-NEXT: .seh_endproc
|
|
alloca [300 x i8]
|
|
%ra = call i8* @llvm.returnaddress(i32 0)
|
|
ret i8* %ra
|
|
}
|
|
|
|
declare void @external(i8*)
|
|
|
|
define void @f5() "frame-pointer"="all" {
|
|
; ALL-LABEL: f5:
|
|
; ALL: # %bb.0:
|
|
; ALL-NEXT: pushq %rbp
|
|
; ALL-NEXT: .seh_pushreg %rbp
|
|
; ALL-NEXT: subq $336, %rsp # imm = 0x150
|
|
; ALL-NEXT: .seh_stackalloc 336
|
|
; ALL-NEXT: leaq {{[0-9]+}}(%rsp), %rbp
|
|
; ALL-NEXT: .seh_setframe %rbp, 128
|
|
; ALL-NEXT: .seh_endprologue
|
|
; ALL-NEXT: leaq -92(%rbp), %rcx
|
|
; ALL-NEXT: callq external
|
|
; ALL-NEXT: nop
|
|
; ALL-NEXT: addq $336, %rsp # imm = 0x150
|
|
; ALL-NEXT: popq %rbp
|
|
; ALL-NEXT: retq
|
|
; ALL-NEXT: .seh_endproc
|
|
%a = alloca [300 x i8]
|
|
%gep = getelementptr [300 x i8], [300 x i8]* %a, i32 0, i32 0
|
|
call void @external(i8* %gep)
|
|
ret void
|
|
}
|
|
|
|
define void @f6(i32 %p, ...) "frame-pointer"="all" {
|
|
; ALL-LABEL: f6:
|
|
; ALL: # %bb.0:
|
|
; ALL-NEXT: pushq %rbp
|
|
; ALL-NEXT: .seh_pushreg %rbp
|
|
; ALL-NEXT: subq $336, %rsp # imm = 0x150
|
|
; ALL-NEXT: .seh_stackalloc 336
|
|
; ALL-NEXT: leaq {{[0-9]+}}(%rsp), %rbp
|
|
; ALL-NEXT: .seh_setframe %rbp, 128
|
|
; ALL-NEXT: .seh_endprologue
|
|
; ALL-NEXT: leaq -92(%rbp), %rcx
|
|
; ALL-NEXT: callq external
|
|
; ALL-NEXT: nop
|
|
; ALL-NEXT: addq $336, %rsp # imm = 0x150
|
|
; ALL-NEXT: popq %rbp
|
|
; ALL-NEXT: retq
|
|
; ALL-NEXT: .seh_endproc
|
|
%a = alloca [300 x i8]
|
|
%gep = getelementptr [300 x i8], [300 x i8]* %a, i32 0, i32 0
|
|
call void @external(i8* %gep)
|
|
ret void
|
|
}
|
|
|
|
define i32 @f7(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e) "frame-pointer"="all" {
|
|
; ALL-LABEL: f7:
|
|
; ALL: # %bb.0:
|
|
; ALL-NEXT: pushq %rbp
|
|
; ALL-NEXT: .seh_pushreg %rbp
|
|
; ALL-NEXT: subq $304, %rsp # imm = 0x130
|
|
; ALL-NEXT: .seh_stackalloc 304
|
|
; ALL-NEXT: leaq {{[0-9]+}}(%rsp), %rbp
|
|
; ALL-NEXT: .seh_setframe %rbp, 128
|
|
; ALL-NEXT: .seh_endprologue
|
|
; ALL-NEXT: andq $-64, %rsp
|
|
; ALL-NEXT: movl 224(%rbp), %eax
|
|
; ALL-NEXT: leaq 176(%rbp), %rsp
|
|
; ALL-NEXT: popq %rbp
|
|
; ALL-NEXT: retq
|
|
; ALL-NEXT: .seh_endproc
|
|
alloca [300 x i8], align 64
|
|
ret i32 %e
|
|
}
|
|
|
|
define i32 @f8(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e) "frame-pointer"="all" {
|
|
; ALL-LABEL: f8:
|
|
; ALL: # %bb.0:
|
|
; ALL-NEXT: pushq %rbp
|
|
; ALL-NEXT: .seh_pushreg %rbp
|
|
; ALL-NEXT: pushq %rsi
|
|
; ALL-NEXT: .seh_pushreg %rsi
|
|
; ALL-NEXT: pushq %rbx
|
|
; ALL-NEXT: .seh_pushreg %rbx
|
|
; ALL-NEXT: subq $352, %rsp # imm = 0x160
|
|
; ALL-NEXT: .seh_stackalloc 352
|
|
; ALL-NEXT: leaq {{[0-9]+}}(%rsp), %rbp
|
|
; ALL-NEXT: .seh_setframe %rbp, 128
|
|
; ALL-NEXT: .seh_endprologue
|
|
; ALL-NEXT: andq $-64, %rsp
|
|
; ALL-NEXT: movq %rsp, %rbx
|
|
; ALL-NEXT: movl 288(%rbp), %esi
|
|
; ALL-NEXT: movl %ecx, %eax
|
|
; ALL-NEXT: leaq 15(,%rax,4), %rax
|
|
; ALL-NEXT: andq $-16, %rax
|
|
; ALL-NEXT: callq __chkstk
|
|
; ALL-NEXT: subq %rax, %rsp
|
|
; ALL-NEXT: subq $32, %rsp
|
|
; ALL-NEXT: movq %rbx, %rcx
|
|
; ALL-NEXT: callq external
|
|
; ALL-NEXT: addq $32, %rsp
|
|
; ALL-NEXT: movl %esi, %eax
|
|
; ALL-NEXT: leaq 224(%rbp), %rsp
|
|
; ALL-NEXT: popq %rbx
|
|
; ALL-NEXT: popq %rsi
|
|
; ALL-NEXT: popq %rbp
|
|
; ALL-NEXT: retq
|
|
; ALL-NEXT: .seh_endproc
|
|
%alloca = alloca [300 x i8], align 64
|
|
alloca i32, i32 %a
|
|
%gep = getelementptr [300 x i8], [300 x i8]* %alloca, i32 0, i32 0
|
|
call void @external(i8* %gep)
|
|
ret i32 %e
|
|
}
|
|
|
|
define i64 @f9() {
|
|
; ALL-LABEL: f9:
|
|
; ALL: # %bb.0: # %entry
|
|
; ALL-NEXT: pushq %rbp
|
|
; ALL-NEXT: .seh_pushreg %rbp
|
|
; ALL-NEXT: movq %rsp, %rbp
|
|
; ALL-NEXT: .seh_setframe %rbp, 0
|
|
; ALL-NEXT: .seh_endprologue
|
|
; ALL-NEXT: pushfq
|
|
; ALL-NEXT: popq %rax
|
|
; ALL-NEXT: popq %rbp
|
|
; ALL-NEXT: retq
|
|
; ALL-NEXT: .seh_endproc
|
|
entry:
|
|
%call = call i64 @llvm.x86.flags.read.u64()
|
|
ret i64 %call
|
|
}
|
|
|
|
declare i64 @dummy()
|
|
|
|
define i64 @f10(i64* %foo, i64 %bar, i64 %baz) {
|
|
; ALL-LABEL: f10:
|
|
; ALL: # %bb.0:
|
|
; ALL-NEXT: pushq %rsi
|
|
; ALL-NEXT: .seh_pushreg %rsi
|
|
; ALL-NEXT: pushq %rbx
|
|
; ALL-NEXT: .seh_pushreg %rbx
|
|
; ALL-NEXT: subq $40, %rsp
|
|
; ALL-NEXT: .seh_stackalloc 40
|
|
; ALL-NEXT: .seh_endprologue
|
|
; ALL-NEXT: movq %rdx, %rsi
|
|
; ALL-NEXT: movq %rdx, %rax
|
|
; ALL-NEXT: lock cmpxchgq %r8, (%rcx)
|
|
; ALL-NEXT: sete %bl
|
|
; ALL-NEXT: callq dummy
|
|
; ALL-NEXT: testb %bl, %bl
|
|
; ALL-NEXT: cmoveq %rsi, %rax
|
|
; ALL-NEXT: addq $40, %rsp
|
|
; ALL-NEXT: popq %rbx
|
|
; ALL-NEXT: popq %rsi
|
|
; ALL-NEXT: retq
|
|
; ALL-NEXT: .seh_endproc
|
|
%cx = cmpxchg i64* %foo, i64 %bar, i64 %baz seq_cst seq_cst
|
|
%v = extractvalue { i64, i1 } %cx, 0
|
|
%p = extractvalue { i64, i1 } %cx, 1
|
|
%call = call i64 @dummy()
|
|
%sel = select i1 %p, i64 %call, i64 %bar
|
|
ret i64 %sel
|
|
}
|
|
|
|
define i8* @f11() "frame-pointer"="all" {
|
|
; ALL-LABEL: f11:
|
|
; ALL: # %bb.0:
|
|
; ALL-NEXT: pushq %rbp
|
|
; ALL-NEXT: .seh_pushreg %rbp
|
|
; ALL-NEXT: movq %rsp, %rbp
|
|
; ALL-NEXT: .seh_setframe %rbp, 0
|
|
; ALL-NEXT: .seh_endprologue
|
|
; ALL-NEXT: leaq 8(%rbp), %rax
|
|
; ALL-NEXT: popq %rbp
|
|
; ALL-NEXT: retq
|
|
; ALL-NEXT: .seh_endproc
|
|
%aora = call i8* @llvm.addressofreturnaddress()
|
|
ret i8* %aora
|
|
}
|
|
|
|
define i8* @f12() {
|
|
; ALL-LABEL: f12:
|
|
; ALL: # %bb.0:
|
|
; ALL-NEXT: movq %rsp, %rax
|
|
; ALL-NEXT: retq
|
|
%aora = call i8* @llvm.addressofreturnaddress()
|
|
ret i8* %aora
|
|
}
|
|
|
|
declare i8* @llvm.returnaddress(i32) nounwind readnone
|
|
declare i8* @llvm.addressofreturnaddress() nounwind readnone
|
|
declare i64 @llvm.x86.flags.read.u64()
|
|
declare void @llvm.va_start(i8*) nounwind
|