xref: /aosp_15_r20/external/llvm/test/CodeGen/AArch64/arm64-extload-knownzero.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -march=arm64 | FileCheck %s
2*9880d681SAndroid Build Coastguard Worker; rdar://12771555
3*9880d681SAndroid Build Coastguard Worker
4*9880d681SAndroid Build Coastguard Workerdefine void @foo(i16* %ptr, i32 %a) nounwind {
5*9880d681SAndroid Build Coastguard Workerentry:
6*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: foo:
7*9880d681SAndroid Build Coastguard Worker  %tmp1 = icmp ult i32 %a, 100
8*9880d681SAndroid Build Coastguard Worker  br i1 %tmp1, label %bb1, label %bb2
9*9880d681SAndroid Build Coastguard Workerbb1:
10*9880d681SAndroid Build Coastguard Worker; CHECK: %bb1
11*9880d681SAndroid Build Coastguard Worker; CHECK: ldrh [[REG:w[0-9]+]]
12*9880d681SAndroid Build Coastguard Worker  %tmp2 = load i16, i16* %ptr, align 2
13*9880d681SAndroid Build Coastguard Worker  br label %bb2
14*9880d681SAndroid Build Coastguard Workerbb2:
15*9880d681SAndroid Build Coastguard Worker; CHECK: %bb2
16*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: and {{w[0-9]+}}, [[REG]], #0xffff
17*9880d681SAndroid Build Coastguard Worker; CHECK: cmp [[REG]], #23
18*9880d681SAndroid Build Coastguard Worker  %tmp3 = phi i16 [ 0, %entry ], [ %tmp2, %bb1 ]
19*9880d681SAndroid Build Coastguard Worker  %cmp = icmp ult i16 %tmp3, 24
20*9880d681SAndroid Build Coastguard Worker  br i1 %cmp, label %bb3, label %exit
21*9880d681SAndroid Build Coastguard Workerbb3:
22*9880d681SAndroid Build Coastguard Worker  call void @bar() nounwind
23*9880d681SAndroid Build Coastguard Worker  br label %exit
24*9880d681SAndroid Build Coastguard Workerexit:
25*9880d681SAndroid Build Coastguard Worker  ret void
26*9880d681SAndroid Build Coastguard Worker}
27*9880d681SAndroid Build Coastguard Worker
28*9880d681SAndroid Build Coastguard Workerdeclare void @bar ()
29