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llvm-project/llvm/test/CodeGen/SystemZ/buildvector-00.ll

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[SystemZ] Regenerate tests to make complete codegen more obvious llvm-svn: 356137
2019-03-14 19:54:46 +08:00
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s
[SystemZ] Wait with VGBM selection until after DAGCombine2. Don't lower BUILD_VECTORs to BYTE_MASK, but instead expose the BUILD_VECTORs to the DAGCombiner and select them to VGBM in Select(). This allows the DAGCombiner to understand the constant vector values. For floating point, only all-zeros vectors are now generated with VGBM, as it turned out to be somewhat complicated to handle any arbitrary constants, while in practice this is very rare and hardly needed. The SystemZ ISD opcodes z_byte_mask, z_vzero and z_vones have been removed. Review: Ulrich Weigand https://reviews.llvm.org/D57152 llvm-svn: 353325
2019-02-07 02:59:19 +08:00
; Test that the dag combiner can understand that some vector operands are
; all-zeros and then optimize the logical operations.
define void @f1() {
; CHECK-LABEL: f1:
[SystemZ] Regenerate tests to make complete codegen more obvious llvm-svn: 356137
2019-03-14 19:54:46 +08:00
; CHECK: # %bb.0: # %bb
; CHECK-NEXT: vlrepg %v0, 0(%r1)
; CHECK-NEXT: vgbm %v1, 0
; CHECK-NEXT: vceqg %v2, %v0, %v1
; CHECK-NEXT: vn %v0, %v0, %v0
; CHECK-NEXT: vno %v2, %v2, %v2
; CHECK-NEXT: vceqg %v0, %v0, %v1
; CHECK-NEXT: vx %v0, %v2, %v0
; CHECK-NEXT: vnc %v0, %v2, %v0
; CHECK-NEXT: vlgvf %r0, %v0, 1
; CHECK-NEXT: tmll %r0, 1
; CHECK-NEXT: # %bb.1: # %bb15
[SystemZ] Wait with VGBM selection until after DAGCombine2. Don't lower BUILD_VECTORs to BYTE_MASK, but instead expose the BUILD_VECTORs to the DAGCombiner and select them to VGBM in Select(). This allows the DAGCombiner to understand the constant vector values. For floating point, only all-zeros vectors are now generated with VGBM, as it turned out to be somewhat complicated to handle any arbitrary constants, while in practice this is very rare and hardly needed. The SystemZ ISD opcodes z_byte_mask, z_vzero and z_vones have been removed. Review: Ulrich Weigand https://reviews.llvm.org/D57152 llvm-svn: 353325
2019-02-07 02:59:19 +08:00
bb:
%tmp = shufflevector <2 x i64> undef, <2 x i64> undef, <2 x i32> zeroinitializer
br label %bb1
bb1: ; preds = %bb
%tmp2 = load i64, i64* undef, align 8
%tmp3 = insertelement <2 x i64> undef, i64 %tmp2, i32 1
%tmp4 = icmp ne <2 x i64> undef, zeroinitializer
%tmp5 = xor <2 x i1> %tmp4, zeroinitializer
%tmp6 = xor <2 x i1> zeroinitializer, %tmp5
%tmp7 = and <2 x i64> %tmp3, %tmp
%tmp8 = icmp ne <2 x i64> %tmp7, zeroinitializer
%tmp9 = xor <2 x i1> zeroinitializer, %tmp8
%tmp10 = icmp ne <2 x i64> undef, zeroinitializer
%tmp11 = xor <2 x i1> %tmp10, %tmp9
%tmp12 = and <2 x i1> %tmp6, %tmp11
%tmp13 = extractelement <2 x i1> %tmp12, i32 0
br i1 %tmp13, label %bb14, label %bb15
bb14: ; preds = %bb1
store i64 undef, i64* undef, align 8
br label %bb15
bb15: ; preds = %bb14, %bb1
unreachable
}