forked from OSchip/llvm-project
67 lines
2.1 KiB
LLVM
67 lines
2.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=s390x-linux-gnu -mcpu=z13 < %s | FileCheck %s
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; Test that DAGCombiner gets helped by computeKnownBitsForTargetNode().
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; SystemZISD::REPLICATE
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define i32 @f0(<4 x i32> %a0) {
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; CHECK-LABEL: f0:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vgbm %v0, 0
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; CHECK-NEXT: vceqf %v0, %v24, %v0
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; CHECK-NEXT: vrepif %v1, 1
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; CHECK-NEXT: vnc %v0, %v1, %v0
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; CHECK-NEXT: vlgvf %r2, %v0, 3
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; CHECK-NEXT: # kill: def $r2l killed $r2l killed $r2d
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; CHECK-NEXT: br %r14
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%cmp0 = icmp ne <4 x i32> %a0, zeroinitializer
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%zxt0 = zext <4 x i1> %cmp0 to <4 x i32>
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%ext0 = extractelement <4 x i32> %zxt0, i32 3
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br label %exit
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exit:
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; The vector icmp+zext involves a REPLICATE of 1's. If KnownBits reflects
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; this, DAGCombiner can see that the i32 icmp and zext here are not needed.
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%cmp1 = icmp ne i32 %ext0, 0
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%zxt1 = zext i1 %cmp1 to i32
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ret i32 %zxt1
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}
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; SystemZISD::JOIN_DWORDS (and REPLICATE)
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; The DAG XOR has JOIN_DWORDS and REPLICATE operands. With KnownBits properly set
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; for both these nodes, ICMP is used instead of TM during lowering because
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; adjustForRedundantAnd() succeeds.
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define void @f1() {
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; CHECK-LABEL: f1:
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; CHECK: # %bb.0:
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; CHECK-NEXT: clhhsi 0, 0
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; CHECK-NEXT: lhi %r0, 0
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; CHECK-NEXT: lochie %r0, 1
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; CHECK-NEXT: lghi %r1, 1
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; CHECK-NEXT: vlvgp %v0, %r0, %r1
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; CHECK-NEXT: vrepig %v1, 1
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; CHECK-NEXT: vx %v0, %v0, %v1
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; CHECK-NEXT: vlgvf %r0, %v0, 1
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; CHECK-NEXT: cijlh %r0, 0, .LBB1_3
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; CHECK-NEXT: # %bb.1:
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; CHECK-NEXT: vlgvf %r0, %v0, 3
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; CHECK-NEXT: cijlh %r0, 0, .LBB1_3
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; CHECK-NEXT: # %bb.2:
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; CHECK-NEXT: .LBB1_3:
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%1 = load i16, i16* null, align 2
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%2 = icmp eq i16 %1, 0
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%3 = insertelement <2 x i1> undef, i1 %2, i32 0
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%4 = insertelement <2 x i1> %3, i1 true, i32 1
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%5 = xor <2 x i1> %4, <i1 true, i1 true>
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%6 = extractelement <2 x i1> %5, i32 0
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%7 = extractelement <2 x i1> %5, i32 1
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%8 = or i1 %6, %7
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br i1 %8, label %10, label %9
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; <label>:8: ; preds = %0
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unreachable
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; <label>:9: ; preds = %0
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unreachable
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}
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