06a4c85890
This allows the instruction selector to realize that it can directly broadcast the low byte of the memset value, rather than replicating it to a 64-bit GPR before broadcasting. This fixes PR50985. Differential Revision: https://reviews.llvm.org/D108354
19 lines
467 B
LLVM
19 lines
467 B
LLVM
; RUN: llc < %s | FileCheck %s
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target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
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target triple = "aarch64-unknown-linux-gnu"
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; CHECK: memset_call:
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; CHECK-NOT: and
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; CHECK: dup
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; CHECK-NEXT: stp
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; CHECK-NEXT: stp
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; CHECK-NEXT: ret
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define void @memset_call(i8* %0, i32 %1) {
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%3 = trunc i32 %1 to i8
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call void @llvm.memset.p0i8.i64(i8* %0, i8 %3, i64 64, i1 false)
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ret void
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}
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declare void @llvm.memset.p0i8.i64(i8*, i8, i64, i1 immarg)
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