Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/CodeGen/SystemZ/vec-combine-01.ll

@@ -1,155 +0,0 @@
-; Test various target-specific DAG combiner patterns.
-;
-; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s
-
-; Check that an extraction followed by a truncation is effectively treated
-; as a bitcast.
-define void @f1(<4 x i32> %v1, <4 x i32> %v2, i8 *%ptr1, i8 *%ptr2) {
-; CHECK-LABEL: f1:
-; CHECK: vaf [[REG:%v[0-9]+]], %v24, %v26
-; CHECK-DAG: vsteb [[REG]], 0(%r2), 3
-; CHECK-DAG: vsteb [[REG]], 0(%r3), 15
-; CHECK: br %r14
-  %add = add <4 x i32> %v1, %v2
-  %elem1 = extractelement <4 x i32> %add, i32 0
-  %elem2 = extractelement <4 x i32> %add, i32 3
-  %trunc1 = trunc i32 %elem1 to i8
-  %trunc2 = trunc i32 %elem2 to i8
-  store i8 %trunc1, i8 *%ptr1
-  store i8 %trunc2, i8 *%ptr2
-  ret void
-}
-
-; Test a case where a pack-type shuffle can be eliminated.
-define i16 @f2(<4 x i32> %v1, <4 x i32> %v2, <4 x i32> %v3) {
-; CHECK-LABEL: f2:
-; CHECK-NOT: vpk
-; CHECK-DAG: vaf [[REG1:%v[0-9]+]], %v24, %v26
-; CHECK-DAG: vaf [[REG2:%v[0-9]+]], %v26, %v28
-; CHECK-DAG: vlgvh {{%r[0-5]}}, [[REG1]], 3
-; CHECK-DAG: vlgvh {{%r[0-5]}}, [[REG2]], 7
-; CHECK: br %r14
-  %add1 = add <4 x i32> %v1, %v2
-  %add2 = add <4 x i32> %v2, %v3
-  %shuffle = shufflevector <4 x i32> %add1, <4 x i32> %add2,
-                           <4 x i32> <i32 1, i32 3, i32 5, i32 7>
-  %bitcast = bitcast <4 x i32> %shuffle to <8 x i16>
-  %elem1 = extractelement <8 x i16> %bitcast, i32 1
-  %elem2 = extractelement <8 x i16> %bitcast, i32 7
-  %res = add i16 %elem1, %elem2
-  ret i16 %res
-}
-
-; ...and again in a case where there's also a splat and a bitcast.
-define i16 @f3(<4 x i32> %v1, <4 x i32> %v2, <2 x i64> %v3) {
-; CHECK-LABEL: f3:
-; CHECK-NOT: vrepg
-; CHECK-NOT: vpk
-; CHECK-DAG: vaf [[REG:%v[0-9]+]], %v24, %v26
-; CHECK-DAG: vlgvh {{%r[0-5]}}, [[REG]], 6
-; CHECK-DAG: vlgvh {{%r[0-5]}}, %v28, 3
-; CHECK: br %r14
-  %add = add <4 x i32> %v1, %v2
-  %splat = shufflevector <2 x i64> %v3, <2 x i64> undef,
-                         <2 x i32> <i32 0, i32 0>
-  %splatcast = bitcast <2 x i64> %splat to <4 x i32>
-  %shuffle = shufflevector <4 x i32> %add, <4 x i32> %splatcast,
-                           <4 x i32> <i32 1, i32 3, i32 5, i32 7>
-  %bitcast = bitcast <4 x i32> %shuffle to <8 x i16>
-  %elem1 = extractelement <8 x i16> %bitcast, i32 2
-  %elem2 = extractelement <8 x i16> %bitcast, i32 7
-  %res = add i16 %elem1, %elem2
-  ret i16 %res
-}
-
-; ...and again with a merge low instead of a pack.
-define i16 @f4(<4 x i32> %v1, <4 x i32> %v2, <2 x i64> %v3) {
-; CHECK-LABEL: f4:
-; CHECK-NOT: vrepg
-; CHECK-NOT: vmr
-; CHECK-DAG: vaf [[REG:%v[0-9]+]], %v24, %v26
-; CHECK-DAG: vlgvh {{%r[0-5]}}, [[REG]], 6
-; CHECK-DAG: vlgvh {{%r[0-5]}}, %v28, 3
-; CHECK: br %r14
-  %add = add <4 x i32> %v1, %v2
-  %splat = shufflevector <2 x i64> %v3, <2 x i64> undef,
-                         <2 x i32> <i32 0, i32 0>
-  %splatcast = bitcast <2 x i64> %splat to <4 x i32>
-  %shuffle = shufflevector <4 x i32> %add, <4 x i32> %splatcast,
-                           <4 x i32> <i32 2, i32 6, i32 3, i32 7>
-  %bitcast = bitcast <4 x i32> %shuffle to <8 x i16>
-  %elem1 = extractelement <8 x i16> %bitcast, i32 4
-  %elem2 = extractelement <8 x i16> %bitcast, i32 7
-  %res = add i16 %elem1, %elem2
-  ret i16 %res
-}
-
-; ...and again with a merge high.
-define i16 @f5(<4 x i32> %v1, <4 x i32> %v2, <2 x i64> %v3) {
-; CHECK-LABEL: f5:
-; CHECK-NOT: vrepg
-; CHECK-NOT: vmr
-; CHECK-DAG: vaf [[REG:%v[0-9]+]], %v24, %v26
-; CHECK-DAG: vlgvh {{%r[0-5]}}, [[REG]], 2
-; CHECK-DAG: vlgvh {{%r[0-5]}}, %v28, 3
-; CHECK: br %r14
-  %add = add <4 x i32> %v1, %v2
-  %splat = shufflevector <2 x i64> %v3, <2 x i64> undef,
-                         <2 x i32> <i32 0, i32 0>
-  %splatcast = bitcast <2 x i64> %splat to <4 x i32>
-  %shuffle = shufflevector <4 x i32> %add, <4 x i32> %splatcast,
-                           <4 x i32> <i32 0, i32 4, i32 1, i32 5>
-  %bitcast = bitcast <4 x i32> %shuffle to <8 x i16>
-  %elem1 = extractelement <8 x i16> %bitcast, i32 4
-  %elem2 = extractelement <8 x i16> %bitcast, i32 7
-  %res = add i16 %elem1, %elem2
-  ret i16 %res
-}
-
-; Test a case where an unpack high can be eliminated from the usual
-; load-extend sequence.
-define void @f6(<8 x i8> *%ptr1, i8 *%ptr2, i8 *%ptr3, i8 *%ptr4) {
-; CHECK-LABEL: f6:
-; CHECK: vlrepg [[REG:%v[0-9]+]], 0(%r2)
-; CHECK-NOT: vup
-; CHECK-DAG: vsteb [[REG]], 0(%r3), 1
-; CHECK-DAG: vsteb [[REG]], 0(%r4), 2
-; CHECK-DAG: vsteb [[REG]], 0(%r5), 7
-; CHECK: br %r14
-  %vec = load <8 x i8>, <8 x i8> *%ptr1
-  %ext = sext <8 x i8> %vec to <8 x i16>
-  %elem1 = extractelement <8 x i16> %ext, i32 1
-  %elem2 = extractelement <8 x i16> %ext, i32 2
-  %elem3 = extractelement <8 x i16> %ext, i32 7
-  %trunc1 = trunc i16 %elem1 to i8
-  %trunc2 = trunc i16 %elem2 to i8
-  %trunc3 = trunc i16 %elem3 to i8
-  store i8 %trunc1, i8 *%ptr2
-  store i8 %trunc2, i8 *%ptr3
-  store i8 %trunc3, i8 *%ptr4
-  ret void
-}
-
-; ...and again with a bitcast inbetween.
-define void @f7(<4 x i8> *%ptr1, i8 *%ptr2, i8 *%ptr3, i8 *%ptr4) {
-; CHECK-LABEL: f7:
-; CHECK: vlrepf [[REG:%v[0-9]+]], 0(%r2)
-; CHECK-NOT: vup
-; CHECK-DAG: vsteb [[REG]], 0(%r3), 0
-; CHECK-DAG: vsteb [[REG]], 0(%r4), 1
-; CHECK-DAG: vsteb [[REG]], 0(%r5), 3
-; CHECK: br %r14
-  %vec = load <4 x i8>, <4 x i8> *%ptr1
-  %ext = sext <4 x i8> %vec to <4 x i32>
-  %bitcast = bitcast <4 x i32> %ext to <8 x i16>
-  %elem1 = extractelement <8 x i16> %bitcast, i32 1
-  %elem2 = extractelement <8 x i16> %bitcast, i32 3
-  %elem3 = extractelement <8 x i16> %bitcast, i32 7
-  %trunc1 = trunc i16 %elem1 to i8
-  %trunc2 = trunc i16 %elem2 to i8
-  %trunc3 = trunc i16 %elem3 to i8
-  store i8 %trunc1, i8 *%ptr2
-  store i8 %trunc2, i8 *%ptr3
-  store i8 %trunc3, i8 *%ptr4
-  ret void
-}