1; RUN: opt < %s -basicaa -gvn -S | FileCheck %s 2 3declare void @llvm.masked.scatter.v2i32.v2p0i32(<2 x i32> , <2 x i32*> , i32 , <2 x i1> ) 4declare <2 x i32> @llvm.masked.gather.v2i32.v2p0i32(<2 x i32*>, i32, <2 x i1>, <2 x i32>) 5 6; This test ensures that masked scatter and gather operations, which take vectors of pointers, 7; do not have pointer aliasing ignored when being processed. 8; No scatter/gather calls should end up eliminated 9; CHECK: llvm.masked.gather 10; CHECK: llvm.masked.gather 11; CHECK: llvm.masked.scatter 12; CHECK: llvm.masked.gather 13; CHECK: llvm.masked.scatter 14; CHECK: llvm.masked.gather 15define spir_kernel void @test(<2 x i32*> %in1, <2 x i32*> %in2, i32* %out) { 16entry: 17 ; Just some temporary storage 18 %tmp.0 = alloca i32 19 %tmp.1 = alloca i32 20 %tmp.i = insertelement <2 x i32*> undef, i32* %tmp.0, i32 0 21 %tmp = insertelement <2 x i32*> %tmp.i, i32* %tmp.1, i32 1 22 ; Read from in1 and in2 23 %in1.v = call <2 x i32> @llvm.masked.gather.v2i32.v2p0i32(<2 x i32*> %in1, i32 1, <2 x i1> <i1 true, i1 true>, <2 x i32> undef) #1 24 %in2.v = call <2 x i32> @llvm.masked.gather.v2i32.v2p0i32(<2 x i32*> %in2, i32 1, <2 x i1> <i1 true, i1 true>, <2 x i32> undef) #1 25 ; Store in1 to the allocas 26 call void @llvm.masked.scatter.v2i32.v2p0i32(<2 x i32> %in1.v, <2 x i32*> %tmp, i32 1, <2 x i1> <i1 true, i1 true>); 27 ; Read in1 from the allocas 28 ; This gather should alias the scatter we just saw 29 %tmp.v.0 = call <2 x i32> @llvm.masked.gather.v2i32.v2p0i32(<2 x i32*> %tmp, i32 1, <2 x i1> <i1 true, i1 true>, <2 x i32> undef) #1 30 ; Store in2 to the allocas 31 call void @llvm.masked.scatter.v2i32.v2p0i32(<2 x i32> %in2.v, <2 x i32*> %tmp, i32 1, <2 x i1> <i1 true, i1 true>); 32 ; Read in2 from the allocas 33 ; This gather should alias the scatter we just saw, and not be eliminated 34 %tmp.v.1 = call <2 x i32> @llvm.masked.gather.v2i32.v2p0i32(<2 x i32*> %tmp, i32 1, <2 x i1> <i1 true, i1 true>, <2 x i32> undef) #1 35 ; Store in2 to out for good measure 36 %tmp.v.1.0 = extractelement <2 x i32> %tmp.v.1, i32 0 37 %tmp.v.1.1 = extractelement <2 x i32> %tmp.v.1, i32 1 38 store i32 %tmp.v.1.0, i32* %out 39 %out.1 = getelementptr i32, i32* %out, i32 1 40 store i32 %tmp.v.1.1, i32* %out.1 41 ret void 42} 43