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LLVM generates illegal `rbit r0, #352` instruction for rbit intrinsic. According to ARM ARM, rbit only takes register as argument, not immediate. The correct instruction should be rbit <Rd>, <Rm>. The bug was originally introduced in r211057. Differential Revision: http://reviews.llvm.org/D4980 llvm-svn: 216064
21 lines
441 B
LLVM
21 lines
441 B
LLVM
; RUN: llc -mtriple=aarch64-eabi %s -o - | FileCheck %s
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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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