forked from OSchip/llvm-project
24 lines
703 B
LLVM
24 lines
703 B
LLVM
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; RUN: llc -fast-isel -fast-isel-verbose -mtriple arm64-- < %s 2> %t | FileCheck %s
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; RUN: cat %t | FileCheck %s --check-prefix MISSED
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%struct = type { [4 x i32] }
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declare %struct @external()
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; Check that, when fastisel falls back to SDAG, we don't emit instructions
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; that follow a tail-call and would have been dropped by pure SDAGISel.
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; Here, the %struct extractvalue should fail FastISel.
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; MISSED: FastISel miss: %tmp1 = extractvalue %struct %tmp0, 0
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; CHECK-LABEL: test:
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; CHECK: b external
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; CHECK-NEXT: .Lfunc_end0:
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define i32 @test() nounwind {
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%tmp0 = tail call %struct @external()
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%tmp1 = extractvalue %struct %tmp0, 0
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%tmp2 = extractvalue [4 x i32] %tmp1, 0
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ret i32 %tmp2
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}
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