xref: /aosp_15_r20/external/llvm/test/CodeGen/ARM/2013-10-11-select-stalls.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; REQUIRES: asserts
2*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -mtriple=thumbv7-apple-ios -disable-ifcvt-diamond -stats 2>&1 | FileCheck %s
3*9880d681SAndroid Build Coastguard Worker; Evaluate the two vld1.8 instructions in separate MBB's,
4*9880d681SAndroid Build Coastguard Worker; instead of stalling on one and conditionally overwriting its result.
5*9880d681SAndroid Build Coastguard Worker;
6*9880d681SAndroid Build Coastguard Worker; Update: After if-conversion the two vld1.8 instructions are in the same MBB
7*9880d681SAndroid Build Coastguard Worker; again. So we disable this if-conversion to eliminate its influence to this
8*9880d681SAndroid Build Coastguard Worker; test.
9*9880d681SAndroid Build Coastguard Worker
10*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: Number of pipeline stalls
11*9880d681SAndroid Build Coastguard Workerdefine <16 x i8> @multiselect(i32 %avail, i8* %foo, i8* %bar) {
12*9880d681SAndroid Build Coastguard Workerentry:
13*9880d681SAndroid Build Coastguard Worker  %vld1 = call <16 x i8> @llvm.arm.neon.vld1.v16i8.p0i8(i8* %foo, i32 1)
14*9880d681SAndroid Build Coastguard Worker  %vld2 = call <16 x i8> @llvm.arm.neon.vld1.v16i8.p0i8(i8* %bar, i32 1)
15*9880d681SAndroid Build Coastguard Worker  %and = and i32 %avail, 3
16*9880d681SAndroid Build Coastguard Worker  %tobool = icmp eq i32 %and, 0
17*9880d681SAndroid Build Coastguard Worker  %retv = select i1 %tobool, <16 x i8> %vld1, <16 x i8> %vld2
18*9880d681SAndroid Build Coastguard Worker  ret <16 x i8> %retv
19*9880d681SAndroid Build Coastguard Worker}
20*9880d681SAndroid Build Coastguard Worker
21*9880d681SAndroid Build Coastguard Workerdeclare <16 x i8> @llvm.arm.neon.vld1.v16i8.p0i8(i8* , i32 )
22