derek.holloway
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47 lines
1.3 KiB
LLVM
47 lines
1.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=aarch64 -mattr=+sve -verify-machineinstrs < %s | FileCheck %s
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declare i64 @llvm.vscale.i64()
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define i64 @vscale_exact_value() vscale_range(2, 2) {
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; CHECK-LABEL: vscale_exact_value:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov w0, #2 // =0x2
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; CHECK-NEXT: ret
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%vscale = call i64 @llvm.vscale.i64()
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ret i64 %vscale
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}
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define i64 @vscale_mul_bounded(i64 %x) vscale_range(1, 4) {
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; CHECK-LABEL: vscale_mul_bounded:
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; CHECK: // %bb.0:
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; CHECK-NEXT: cntw x0
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; CHECK-NEXT: ret
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%vscale = call i64 @llvm.vscale.i64()
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%mul = mul i64 %vscale, 4
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ret i64 %mul
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}
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define i64 @vscale_and_mask(i64 %x) vscale_range(1, 4) {
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; CHECK-LABEL: vscale_and_mask:
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; CHECK: // %bb.0:
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; CHECK-NEXT: rdvl x8, #1
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; CHECK-NEXT: lsr x0, x8, #4
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; CHECK-NEXT: ret
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%vscale = call i64 @llvm.vscale.i64()
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%masked = and i64 %vscale, 15
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ret i64 %masked
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}
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define i1 @vscale_shl_known_bits(i64 %x) vscale_range(1, 4) {
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; CHECK-LABEL: vscale_shl_known_bits:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov w0, #1 // =0x1
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; CHECK-NEXT: ret
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%vscale = call i64 @llvm.vscale.i64()
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%shl = shl i64 %vscale, 2
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%and = and i64 %shl, 3
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%cmp = icmp eq i64 %and, 0
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ret i1 %cmp
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}
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