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bfd9be426f
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
39 lines
819 B
LLVM
39 lines
819 B
LLVM
; RUN: llc < %s -relocation-model=pic | FileCheck %s
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; CHECK: calll L0$pb
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; CHECK-NEXT: .cfi_adjust_cfa_offset 4
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; CHECK-NEXT: L0$pb:
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; CHECK-NEXT: popl %eax
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; CHECK-NEXT: .cfi_adjust_cfa_offset -4
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; CHECK-NEXT: addl LJTI0_0(,%ecx,4), %eax
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; CHECK-NEXT: jmpl *%eax
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; CHECK: LJTI0_0:
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; CHECK-NEXT: .long LBB0_2-L0$pb
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; CHECK-NEXT: .long LBB0_3-L0$pb
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; CHECK-NEXT: .long LBB0_4-L0$pb
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; CHECK-NEXT: .long LBB0_5-L0$pb
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target triple = "i686--windows-itanium"
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define i32 @f(i64 %x) {
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bb0:
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switch i64 %x, label %bb5 [
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i64 1, label %bb1
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i64 2, label %bb2
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i64 3, label %bb3
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i64 4, label %bb4
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]
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bb1:
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br label %bb5
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bb2:
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br label %bb5
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bb3:
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br label %bb5
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bb4:
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br label %bb5
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bb5:
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%y = phi i32 [ 0, %bb0 ], [ 1, %bb1 ], [ 2, %bb2 ], [ 3, %bb3 ], [ 4, %bb4 ]
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ret i32 %y
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}
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