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72f99d6988
As discussed by Andrea on PR30486, we have an unsafe cast to an Instruction type in the select combine which doesn't take into account that it could be a ConstantExpr instead. Differential Revision: https://reviews.llvm.org/D25466 llvm-svn: 284000
45 lines
953 B
LLVM
45 lines
953 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instcombine -S | FileCheck %s
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@g = global i32 0
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; PR30486
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define i32 @single_case() {
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; CHECK-LABEL: @single_case(
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; CHECK-NEXT: switch i32 ptrtoint (i32* @g to i32), label %x [
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; CHECK-NEXT: ]
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; CHECK: x:
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; CHECK-NEXT: ret i32 0
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;
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switch i32 add (i32 ptrtoint (i32* @g to i32), i32 -1), label %x []
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x:
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ret i32 0
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}
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define i32 @multiple_cases() {
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; CHECK-LABEL: @multiple_cases(
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; CHECK-NEXT: switch i32 ptrtoint (i32* @g to i32), label %x [
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; CHECK-NEXT: i32 2, label %one
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; CHECK-NEXT: i32 3, label %two
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; CHECK-NEXT: ]
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; CHECK: x:
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; CHECK-NEXT: ret i32 0
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; CHECK: one:
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; CHECK-NEXT: ret i32 1
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; CHECK: two:
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; CHECK-NEXT: ret i32 2
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;
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switch i32 add (i32 ptrtoint (i32* @g to i32), i32 -1), label %x [
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i32 1, label %one
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i32 2, label %two
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]
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x:
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ret i32 0
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one:
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ret i32 1
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two:
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ret i32 2
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}
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