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ee7de1cff0
Add support for trimming constants to GetDemandedBits. This fixes some funky constant generation that occurs when stores are expanded for targets that don't support unaligned stores natively. llvm-svn: 144102
22 lines
839 B
LLVM
22 lines
839 B
LLVM
; Make sure short memsets on ARM lower to stores, even when optimizing for size.
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; RUN: llc -march=arm < %s | FileCheck %s -check-prefix=CHECK-GENERIC
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; RUN: llc -march=arm -mcpu=cortex-a8 < %s | FileCheck %s -check-prefix=CHECK-UNALIGNED
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target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32-S32"
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target triple = "thumbv7-apple-ios5.0.0"
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; CHECK-GENERIC: strb
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; CHECK-GENERIT-NEXT: strb
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; CHECK-GENERIT-NEXT: strb
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; CHECK-GENERIT-NEXT: strb
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; CHECK-GENERIT-NEXT: strb
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; CHECK-UNALIGNED: strb
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; CHECK-UNALIGNED-NEXT: str
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define void @foo(i8* nocapture %c) nounwind optsize {
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entry:
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call void @llvm.memset.p0i8.i64(i8* %c, i8 -1, i64 5, i32 1, i1 false)
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ret void
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}
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declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind
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