llvm/test/CodeGen/AArch64/rbit.ll
Yi Kong 40f9d11ccc ARM: Fix codegen for rbit intrinsic
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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216064 91177308-0d34-0410-b5e6-96231b3b80d8
2014-08-20 10:40:20 +00:00

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441 B
LLVM

; RUN: llc -mtriple=aarch64-eabi %s -o - | FileCheck %s
; CHECK-LABEL: rbit32
; CHECK: rbit w0, w0
define i32 @rbit32(i32 %t) {
entry:
%rbit.i = call i32 @llvm.aarch64.rbit.i32(i32 %t)
ret i32 %rbit.i
}
; CHECK-LABEL: rbit64
; CHECK: rbit x0, x0
define i64 @rbit64(i64 %t) {
entry:
%rbit.i = call i64 @llvm.aarch64.rbit.i64(i64 %t)
ret i64 %rbit.i
}
declare i64 @llvm.aarch64.rbit.i64(i64)
declare i32 @llvm.aarch64.rbit.i32(i32)