73 lines
2.2 KiB
LLVM
73 lines
2.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -loop-unroll -codegenprepare -S -mtriple=x86_64-- -mattr=+xop | FileCheck %s
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define i32 @bitreverse_i32(i32 %a) {
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; CHECK-LABEL: @bitreverse_i32(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[REV:%.*]] = call i32 @llvm.bitreverse.i32(i32 [[A:%.*]])
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; CHECK-NEXT: ret i32 [[REV]]
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;
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entry:
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br label %for.body
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for.cond.cleanup: ; preds = %for.body
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ret i32 %or
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for.body: ; preds = %for.body, %entry
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%i.08 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%b.07 = phi i32 [ 0, %entry ], [ %or, %for.body ]
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%shr = lshr i32 %a, %i.08
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%and = and i32 %shr, 1
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%sub = sub nuw nsw i32 31, %i.08
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%shl = shl i32 %and, %sub
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%or = or i32 %shl, %b.07
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%inc = add nuw nsw i32 %i.08, 1
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%exitcond = icmp eq i32 %inc, 32
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br i1 %exitcond, label %for.cond.cleanup, label %for.body, !llvm.loop !3
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}
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; PR40058
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define i64 @bitreverse_i64(i64 %0) {
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; CHECK-LABEL: @bitreverse_i64(
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; CHECK-NEXT: [[REV:%.*]] = call i64 @llvm.bitreverse.i64(i64 [[TMP0:%.*]])
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; CHECK-NEXT: ret i64 [[REV]]
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;
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%2 = lshr i64 %0, 1
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%3 = and i64 %2, 6148914691236517205
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%4 = shl i64 %0, 1
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%5 = and i64 %4, -6148914691236517206
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%6 = or i64 %3, %5
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%7 = lshr i64 %6, 2
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%8 = and i64 %7, 3689348814741910323
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%9 = shl i64 %6, 2
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%10 = and i64 %9, -3689348814741910324
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%11 = or i64 %8, %10
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%12 = lshr i64 %11, 4
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%13 = and i64 %12, 1085102592571150095
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%14 = shl i64 %11, 4
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%15 = and i64 %14, -1085102592571150096
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%16 = or i64 %13, %15
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%17 = lshr i64 %16, 8
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%18 = and i64 %17, 71777214294589695
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%19 = shl i64 %16, 8
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%20 = and i64 %19, -71777214294589696
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%21 = or i64 %18, %20
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%22 = lshr i64 %21, 16
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%23 = and i64 %22, 281470681808895
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%24 = shl i64 %21, 16
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%25 = and i64 %24, -281470681808896
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%26 = or i64 %23, %25
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%27 = tail call i64 @llvm.fshl.i64(i64 %26, i64 %26, i64 32)
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ret i64 %27
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}
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declare i64 @llvm.fshl.i64(i64, i64, i64)
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!llvm.module.flags = !{!0, !1}
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!llvm.ident = !{!2}
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!0 = !{i32 1, !"wchar_size", i32 4}
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!1 = !{i32 1, !"min_enum_size", i32 4}
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!2 = !{!"clang version 3.8.0"}
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!3 = distinct !{!3, !4}
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!4 = !{!"llvm.loop.unroll.full"}
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