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25 lines
583 B
25 lines
583 B
; Test byteswaps between registers.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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declare i32 @llvm.bswap.i32(i32 %a)
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declare i64 @llvm.bswap.i64(i64 %a)
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; Check 32-bit register-to-register byteswaps.
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define i32 @f1(i32 %a) {
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; CHECK-LABEL: f1:
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; CHECK: lrvr [[REGISTER:%r[0-5]]], %r2
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; CHECK: br %r14
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%swapped = call i32 @llvm.bswap.i32(i32 %a)
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ret i32 %swapped
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}
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; Check 64-bit register-to-register byteswaps.
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define i64 @f2(i64 %a) {
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; CHECK-LABEL: f2:
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; CHECK: lrvgr %r2, %r2
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; CHECK: br %r14
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%swapped = call i64 @llvm.bswap.i64(i64 %a)
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ret i64 %swapped
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}
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