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https://github.com/c64scene-ar/llvm-6502.git
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69114ee016
Win64 has specific contraints on what valid prologues and epilogues look like. This constraint is born from the flexibility and descriptiveness of Win64's unwind opcodes. Prologues previously emitted by LLVM could not be represented by the unwind opcodes, preventing operations powered by stack unwinding to successfully work. Differential Revision: http://reviews.llvm.org/D7520 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228641 91177308-0d34-0410-b5e6-96231b3b80d8
71 lines
2.5 KiB
LLVM
71 lines
2.5 KiB
LLVM
; RUN: llc < %s -march=x86 | FileCheck %s --check-prefix=CHECK-32
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; RUN: llc < %s -march=x86 -fast-isel -fast-isel-abort | FileCheck %s --check-prefix=CHECK-32
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; RUN: llc < %s -mtriple=x86_64-unknown | FileCheck %s --check-prefix=CHECK-64
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; RUN: llc < %s -mtriple=x86_64-unknown -fast-isel -fast-isel-abort | FileCheck %s --check-prefix=CHECK-64
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; RUN: llc < %s -mtriple=x86_64-gnux32 | FileCheck %s --check-prefix=CHECK-X32ABI
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; RUN: llc < %s -mtriple=x86_64-gnux32 -fast-isel -fast-isel-abort | FileCheck %s --check-prefix=CHECK-X32ABI
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; RUN: llc < %s -mtriple=x86_64-nacl | FileCheck %s --check-prefix=CHECK-NACL64
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; RUN: llc < %s -mtriple=x86_64-nacl -fast-isel -fast-isel-abort | FileCheck %s --check-prefix=CHECK-NACL64
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define i8* @test1() nounwind {
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entry:
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; CHECK-32-LABEL: test1
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; CHECK-32: push
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; CHECK-32-NEXT: movl %esp, %ebp
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; CHECK-32-NEXT: movl %ebp, %eax
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; CHECK-32-NEXT: pop
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; CHECK-32-NEXT: ret
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; CHECK-64-LABEL: test1
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; CHECK-64: push
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; CHECK-64-NEXT: movq %rsp, %rbp
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; CHECK-64-NEXT: movq %rbp, %rax
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; CHECK-64-NEXT: pop
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; CHECK-64-NEXT: ret
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; CHECK-X32ABI-LABEL: test1
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; CHECK-X32ABI: pushq %rbp
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; CHECK-X32ABI-NEXT: movl %esp, %ebp
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; CHECK-X32ABI-NEXT: movl %ebp, %eax
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; CHECK-X32ABI-NEXT: popq %rbp
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; CHECK-X32ABI-NEXT: ret
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; CHECK-NACL64-LABEL: test1
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; CHECK-NACL64: pushq %rbp
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; CHECK-NACL64-NEXT: movq %rsp, %rbp
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; CHECK-NACL64-NEXT: movl %ebp, %eax
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%0 = tail call i8* @llvm.frameaddress(i32 0)
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ret i8* %0
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}
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define i8* @test2() nounwind {
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entry:
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; CHECK-32-LABEL: test2
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; CHECK-32: push
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; CHECK-32-NEXT: movl %esp, %ebp
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; CHECK-32-NEXT: movl (%ebp), %eax
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; CHECK-32-NEXT: movl (%eax), %eax
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; CHECK-32-NEXT: pop
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; CHECK-32-NEXT: ret
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; CHECK-64-LABEL: test2
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; CHECK-64: push
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; CHECK-64-NEXT: movq %rsp, %rbp
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; CHECK-64-NEXT: movq (%rbp), %rax
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; CHECK-64-NEXT: movq (%rax), %rax
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; CHECK-64-NEXT: pop
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; CHECK-64-NEXT: ret
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; CHECK-X32ABI-LABEL: test2
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; CHECK-X32ABI: pushq %rbp
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; CHECK-X32ABI-NEXT: movl %esp, %ebp
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; CHECK-X32ABI-NEXT: movl (%ebp), %eax
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; CHECK-X32ABI-NEXT: movl (%eax), %eax
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; CHECK-X32ABI-NEXT: popq %rbp
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; CHECK-X32ABI-NEXT: ret
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; CHECK-NACL64-LABEL: test2
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; CHECK-NACL64: pushq %rbp
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; CHECK-NACL64-NEXT: movq %rsp, %rbp
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; CHECK-NACL64-NEXT: movl (%ebp), %eax
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; CHECK-NACL64-NEXT: movl (%eax), %eax
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%0 = tail call i8* @llvm.frameaddress(i32 2)
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ret i8* %0
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}
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declare i8* @llvm.frameaddress(i32) nounwind readnone
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