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43 lines
969 B
LLVM
43 lines
969 B
LLVM
; RUN: llc -mtriple=aarch64-eabi %s -o - | FileCheck %s
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; The llvm.aarch64.rbit intrinsic should be auto-upgraded to the
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; target-independent bitreverse intrinsic.
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; CHECK-LABEL: rbit32
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; CHECK: rbit w0, w0
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define i32 @rbit32(i32 %t) {
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entry:
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%rbit.i = call i32 @llvm.aarch64.rbit.i32(i32 %t)
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ret i32 %rbit.i
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}
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; CHECK-LABEL: rbit64
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; CHECK: rbit x0, x0
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define i64 @rbit64(i64 %t) {
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entry:
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%rbit.i = call i64 @llvm.aarch64.rbit.i64(i64 %t)
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ret i64 %rbit.i
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}
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declare i64 @llvm.aarch64.rbit.i64(i64)
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declare i32 @llvm.aarch64.rbit.i32(i32)
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; CHECK-LABEL: rbit_generic32
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; CHECK: rbit w0, w0
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define i32 @rbit_generic32(i32 %t) {
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entry:
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%rbit = call i32 @llvm.bitreverse.i32(i32 %t)
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ret i32 %rbit
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}
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; CHECK-LABEL: rbit_generic64
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; CHECK: rbit x0, x0
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define i64 @rbit_generic64(i64 %t) {
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entry:
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%rbit = call i64 @llvm.bitreverse.i64(i64 %t)
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ret i64 %rbit
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}
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declare i32 @llvm.bitreverse.i32(i32) readnone
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declare i64 @llvm.bitreverse.i64(i64) readnone
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