| Saleem Abdulrasool | 082f895 | 2019-09-23 22:23:01 +0000 | [diff] [blame^] | 1 | ; RUN: opt -instcombine -hotcoldsplit -instsimplify %s -o /dev/null |
| 2 | |
| 3 | target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128" |
| 4 | target triple = "aarch64" |
| 5 | |
| 6 | %a = type { i64, i64 } |
| 7 | %b = type { i64 } |
| 8 | |
| 9 | define void @f() { |
| 10 | entry: |
| 11 | %0 = getelementptr inbounds %a, %a* null, i64 0, i32 1 |
| 12 | br label %label |
| 13 | |
| 14 | label: |
| 15 | %1 = bitcast i64* %0 to %b** |
| 16 | %2 = load %b*, %b** %1, align 8 |
| 17 | %3 = getelementptr inbounds %b, %b* %2, i64 undef, i32 0 |
| 18 | %4 = load i64, i64* %3, align 8 |
| 19 | %5 = icmp ugt i64 %4, 1 |
| 20 | br i1 %5, label %if.then, label %if.else |
| 21 | |
| 22 | if.then: |
| 23 | unreachable |
| 24 | |
| 25 | if.else: |
| 26 | call void @g(i8* undef) |
| 27 | %6 = load i64, i64* undef, align 8 |
| 28 | %7 = and i64 %6, -16 |
| 29 | %8 = inttoptr i64 %7 to i8* |
| 30 | %9 = icmp eq i64 %4, 0 |
| 31 | call void @llvm.assume(i1 %9) |
| 32 | unreachable |
| 33 | } |
| 34 | |
| 35 | declare void @g(i8*) |
| 36 | |
| 37 | declare void @llvm.assume(i1) |
| 38 | |