xref: /llvm-project/llvm/test/Transforms/VectorCombine/X86/load-extractelement-scalarization.ll (revision 5ed6229019de43df0ff4b3e73097781e0f1a6651)
1*5ed62290SSimon Pilgrim; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2*5ed62290SSimon Pilgrim; RUN: opt < %s -passes=vector-combine -S -mtriple=x86_64-- -mattr=sse2 | FileCheck %s
3*5ed62290SSimon Pilgrim; RUN: opt < %s -passes=vector-combine -S -mtriple=x86_64-- -mattr=avx2 | FileCheck %s
4*5ed62290SSimon Pilgrim
5*5ed62290SSimon Pilgrim; infinite loop if we add the erased instructions to the work list in the wrong order.
6*5ed62290SSimon Pilgrimdefine void @multiple_extract(ptr %p) {
7*5ed62290SSimon Pilgrim; CHECK-LABEL: @multiple_extract(
8*5ed62290SSimon Pilgrim; CHECK-NEXT:    [[VP:%.*]] = load ptr, ptr [[P:%.*]], align 8
9*5ed62290SSimon Pilgrim; CHECK-NEXT:    [[TMP1:%.*]] = getelementptr inbounds <2 x i32>, ptr [[VP]], i32 0, i64 0
10*5ed62290SSimon Pilgrim; CHECK-NEXT:    [[E0:%.*]] = load i32, ptr [[TMP1]], align 16
11*5ed62290SSimon Pilgrim; CHECK-NEXT:    [[TMP2:%.*]] = getelementptr inbounds <2 x i32>, ptr [[VP]], i32 0, i64 1
12*5ed62290SSimon Pilgrim; CHECK-NEXT:    [[E1:%.*]] = load i32, ptr [[TMP2]], align 4
13*5ed62290SSimon Pilgrim; CHECK-NEXT:    store i32 [[E0]], ptr [[P]], align 4
14*5ed62290SSimon Pilgrim; CHECK-NEXT:    [[P1:%.*]] = getelementptr inbounds nuw i8, ptr [[P]], i64 4
15*5ed62290SSimon Pilgrim; CHECK-NEXT:    store i32 [[E1]], ptr [[P1]], align 4
16*5ed62290SSimon Pilgrim; CHECK-NEXT:    ret void
17*5ed62290SSimon Pilgrim;
18*5ed62290SSimon Pilgrim  %vp = load ptr, ptr %p, align 8
19*5ed62290SSimon Pilgrim  %v = load <2 x i32>, ptr %vp, align 16
20*5ed62290SSimon Pilgrim  %e0 = extractelement <2 x i32> %v, i64 0
21*5ed62290SSimon Pilgrim  %e1 = extractelement <2 x i32> %v, i64 1
22*5ed62290SSimon Pilgrim  store i32 %e0, ptr %p, align 4
23*5ed62290SSimon Pilgrim  %p1 = getelementptr inbounds nuw i8, ptr %p, i64 4
24*5ed62290SSimon Pilgrim  store i32 %e1, ptr %p1, align 4
25*5ed62290SSimon Pilgrim  ret void
26*5ed62290SSimon Pilgrim}
27