a8e486bfc4
Fixes errors about duplicate PHI edges when the input had duplicates with constexprs in them. The constexpr translation makes new basic blocks, causing the verifier to complain about duplicate entries in PHI nodes.
31 lines
843 B
LLVM
31 lines
843 B
LLVM
; RUN: opt -expand-constant-exprs %s.bc -S | FileCheck %s
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@foo = external constant i32
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define i32 @test(i32 %arg) {
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entry:
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switch i32 %arg, label %cont [
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i32 1, label %cont
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i32 2, label %nonconst
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]
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nonconst:
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%cmp = icmp ne i32 %arg, 2
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br i1 %cmp, label %cont, label %cont
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; CHECK-LABEL: phi.constexpr:
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; CHECK-NEXT: %constexpr = ptrtoint ptr @foo to i32
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; CHECK-NEXT: %constexpr1 = or i32 %constexpr, 5
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; CHECK-NEXT: br label %cont
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; CHECK-LABEL: cont:
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; CHECK-NEXT: %res = phi i32 [ %constexpr1, %phi.constexpr ], [ 1, %nonconst ], [ 1, %nonconst ]
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; CHECK-NEXT: ret i32 %res
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cont:
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%res = phi i32 [or (i32 5, i32 ptrtoint (ptr @foo to i32)), %entry],
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[or (i32 5, i32 ptrtoint (ptr @foo to i32)), %entry],
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[1, %nonconst],
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[1, %nonconst]
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ret i32 %res
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}
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