52 lines
1.1 KiB
LLVM
52 lines
1.1 KiB
LLVM
; RUN: llc -mtriple=aarch64-apple-darwin -aarch64-cbz-offset-bits=3 < %s | FileCheck %s
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; CHECK-LABEL: _split_block_no_fallthrough:
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; CHECK: cmn x{{[0-9]+}}, #5
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; CHECK-NEXT: b.le [[B2:LBB[0-9]+_[0-9]+]]
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; CHECK-NEXT: ; BB#1: ; %b3
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; CHECK: ldr [[LOAD:w[0-9]+]]
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; CHECK: cbz [[LOAD]], [[SKIP_LONG_B:LBB[0-9]+_[0-9]+]]
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; CHECK-NEXT: b [[B8:LBB[0-9]+_[0-9]+]]
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; CHECK-NEXT: [[SKIP_LONG_B]]:
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; CHECK-NEXT: b [[B7:LBB[0-9]+_[0-9]+]]
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; CHECK-NEXT: [[B2]]: ; %b2
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; CHECK: mov w{{[0-9]+}}, #93
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; CHECK: bl _extfunc
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; CHECK: cbz w{{[0-9]+}}, [[B7]]
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; CHECK-NEXT: [[B8]]: ; %b8
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; CHECK-NEXT: ret
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; CHECK-NEXT: [[B7]]: ; %b7
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; CHECK: mov w{{[0-9]+}}, #13
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; CHECK: b _extfunc
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define void @split_block_no_fallthrough(i64 %val) #0 {
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bb:
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%c0 = icmp sgt i64 %val, -5
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br i1 %c0, label %b3, label %b2
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b2:
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%v0 = tail call i32 @extfunc(i32 93)
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%c1 = icmp eq i32 %v0, 0
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br i1 %c1, label %b7, label %b8
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b3:
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%v1 = load volatile i32, i32* undef, align 4
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%c2 = icmp eq i32 %v1, 0
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br i1 %c2, label %b7, label %b8
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b7:
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%tmp1 = tail call i32 @extfunc(i32 13)
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ret void
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b8:
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ret void
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}
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declare i32 @extfunc(i32) #0
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attributes #0 = { nounwind }
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