ab23dace56
Summary: This suppresses the generation of .Lcfi labels in our textual assembler. It was annoying that this generated cascading .Lcfi labels: llc foo.ll -o - | llvm-mc | llvm-mc After three trips through MCAsmStreamer, we'd have three labels in the output when none are necessary. We should only bother creating the labels and frame data when making a real object file. This supercedes D38605, which moved the entire .seh_ implementation into MCObjectStreamer. This has the advantage that we do more checking when emitting textual assembly, as a minor efficiency cost. Outputting textual assembly is not performance critical, so this shouldn't matter. Reviewers: majnemer, MatzeB Subscribers: qcolombet, nemanjai, javed.absar, eraman, hiraditya, JDevlieghere, llvm-commits Differential Revision: https://reviews.llvm.org/D38638 llvm-svn: 315259
87 lines
2.1 KiB
LLVM
87 lines
2.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -verify-machineinstrs < %s -mtriple=i686-unknown-unknown -mattr=+rtm | FileCheck %s --check-prefix=X86
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; RUN: llc -verify-machineinstrs < %s -mtriple=x86_64-unknown-unknown -mattr=+rtm | FileCheck %s --check-prefix=X64
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declare i32 @llvm.x86.xbegin() nounwind
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declare void @llvm.x86.xend() nounwind
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declare void @llvm.x86.xabort(i8) nounwind
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declare void @f1()
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define i32 @test_xbegin() nounwind uwtable {
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; X86-LABEL: test_xbegin:
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; X86: # BB#0: # %entry
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; X86-NEXT: xbegin .LBB0_2
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; X86-NEXT: # BB#1: # %entry
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; X86-NEXT: movl $-1, %eax
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; X86: .LBB0_2: # %entry
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; X86-NEXT: # XABORT DEF
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; X86-NEXT: retl
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;
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; X64-LABEL: test_xbegin:
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; X64: # BB#0: # %entry
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; X64-NEXT: xbegin .LBB0_2
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; X64-NEXT: # BB#1: # %entry
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; X64-NEXT: movl $-1, %eax
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; X64: .LBB0_2: # %entry
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; X64-NEXT: # XABORT DEF
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; X64-NEXT: retq
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entry:
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%0 = tail call i32 @llvm.x86.xbegin() nounwind
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ret i32 %0
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}
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define void @test_xend() nounwind uwtable {
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; X86-LABEL: test_xend:
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; X86: # BB#0: # %entry
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; X86-NEXT: xend
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; X86-NEXT: retl
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;
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; X64-LABEL: test_xend:
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; X64: # BB#0: # %entry
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; X64-NEXT: xend
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; X64-NEXT: retq
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entry:
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tail call void @llvm.x86.xend() nounwind
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ret void
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}
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define void @test_xabort() nounwind uwtable {
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; X86-LABEL: test_xabort:
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; X86: # BB#0: # %entry
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; X86-NEXT: xabort $2
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; X86-NEXT: retl
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;
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; X64-LABEL: test_xabort:
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; X64: # BB#0: # %entry
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; X64-NEXT: xabort $2
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; X64-NEXT: retq
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entry:
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tail call void @llvm.x86.xabort(i8 2)
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ret void
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}
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define void @f2(i32 %x) nounwind uwtable {
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; X86-LABEL: f2:
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; X86: # BB#0: # %entry
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; X86-NEXT: xabort $1
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; X86-NEXT: calll f1
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; X86-NEXT: retl
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;
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; X64-LABEL: f2:
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; X64: # BB#0: # %entry
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; X64-NEXT: pushq %rax
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; X64-NEXT: .cfi_def_cfa_offset 16
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; X64-NEXT: movl %edi, {{[0-9]+}}(%rsp)
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; X64-NEXT: xabort $1
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; X64-NEXT: callq f1
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; X64-NEXT: popq %rax
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; X64-NEXT: retq
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entry:
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%x.addr = alloca i32, align 4
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store i32 %x, i32* %x.addr, align 4
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call void @llvm.x86.xabort(i8 1)
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call void @f1()
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ret void
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}
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