derek.holloway
7502bf64a4
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87 lines
3.1 KiB
LLVM
87 lines
3.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
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; RUN: llc < %s -mtriple=riscv64 -mattr=+v | FileCheck %s
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; RUN: llc < %s -mtriple=riscv32 -mattr=+v | FileCheck %s
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; Test that we reverse InstCombinerImpl::transformZExtICmp when unprofitable
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define <vscale x 1 x i8> @reverse_zexticmp_i16(<vscale x 1 x i16> %x) {
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; CHECK-LABEL: reverse_zexticmp_i16:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vsetvli a0, zero, e8, mf8, ta, ma
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; CHECK-NEXT: vnsrl.wi v8, v8, 0
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; CHECK-NEXT: vsrl.vi v8, v8, 2
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; CHECK-NEXT: vand.vi v8, v8, 1
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; CHECK-NEXT: ret
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%1 = trunc <vscale x 1 x i16> %x to <vscale x 1 x i8>
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%2 = lshr <vscale x 1 x i8> %1, splat (i8 2)
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%3 = and <vscale x 1 x i8> %2, splat (i8 1)
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ret <vscale x 1 x i8> %3
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}
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define <vscale x 1 x i8> @reverse_zexticmp_i32(<vscale x 1 x i32> %x) {
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; CHECK-LABEL: reverse_zexticmp_i32:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vsetvli a0, zero, e32, mf2, ta, ma
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; CHECK-NEXT: vand.vi v8, v8, 4
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; CHECK-NEXT: vmsne.vi v0, v8, 0
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; CHECK-NEXT: vsetvli zero, zero, e8, mf8, ta, ma
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; CHECK-NEXT: vmv.v.i v8, 0
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; CHECK-NEXT: vmerge.vim v8, v8, 1, v0
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; CHECK-NEXT: ret
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%1 = trunc <vscale x 1 x i32> %x to <vscale x 1 x i8>
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%2 = lshr <vscale x 1 x i8> %1, splat (i8 2)
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%3 = and <vscale x 1 x i8> %2, splat (i8 1)
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ret <vscale x 1 x i8> %3
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}
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define <vscale x 1 x i8> @reverse_zexticmp_neg_i32(<vscale x 1 x i32> %x) {
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; CHECK-LABEL: reverse_zexticmp_neg_i32:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vsetvli a0, zero, e32, mf2, ta, ma
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; CHECK-NEXT: vand.vi v8, v8, 4
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; CHECK-NEXT: vmseq.vi v0, v8, 0
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; CHECK-NEXT: vsetvli zero, zero, e8, mf8, ta, ma
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; CHECK-NEXT: vmv.v.i v8, 0
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; CHECK-NEXT: vmerge.vim v8, v8, 1, v0
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; CHECK-NEXT: ret
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%1 = trunc <vscale x 1 x i32> %x to <vscale x 1 x i8>
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%2 = xor <vscale x 1 x i8> %1, splat (i8 -1)
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%3 = lshr <vscale x 1 x i8> %2, splat (i8 2)
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%4 = and <vscale x 1 x i8> %3, splat (i8 1)
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ret <vscale x 1 x i8> %4
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}
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define <vscale x 1 x i8> @reverse_zexticmp_i64(<vscale x 1 x i64> %x) {
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; CHECK-LABEL: reverse_zexticmp_i64:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vsetvli a0, zero, e64, m1, ta, ma
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; CHECK-NEXT: vand.vi v8, v8, 4
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; CHECK-NEXT: vmsne.vi v0, v8, 0
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; CHECK-NEXT: vsetvli zero, zero, e8, mf8, ta, ma
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; CHECK-NEXT: vmv.v.i v8, 0
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; CHECK-NEXT: vmerge.vim v8, v8, 1, v0
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; CHECK-NEXT: ret
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%1 = trunc <vscale x 1 x i64> %x to <vscale x 1 x i8>
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%2 = lshr <vscale x 1 x i8> %1, splat (i8 2)
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%3 = and <vscale x 1 x i8> %2, splat (i8 1)
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ret <vscale x 1 x i8> %3
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}
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define <vscale x 1 x i8> @reverse_zexticmp_neg_i64(<vscale x 1 x i64> %x) {
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; CHECK-LABEL: reverse_zexticmp_neg_i64:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vsetvli a0, zero, e64, m1, ta, ma
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; CHECK-NEXT: vand.vi v8, v8, 4
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; CHECK-NEXT: vmseq.vi v0, v8, 0
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; CHECK-NEXT: vsetvli zero, zero, e8, mf8, ta, ma
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; CHECK-NEXT: vmv.v.i v8, 0
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; CHECK-NEXT: vmerge.vim v8, v8, 1, v0
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; CHECK-NEXT: ret
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%1 = trunc <vscale x 1 x i64> %x to <vscale x 1 x i8>
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%2 = xor <vscale x 1 x i8> %1, splat (i8 -1)
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%3 = lshr <vscale x 1 x i8> %2, splat (i8 2)
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%4 = and <vscale x 1 x i8> %3, splat (i8 1)
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ret <vscale x 1 x i8> %4
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}
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