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in more instructions than the libary call. Differential Revision: http://reviews.llvm.org/D20958 llvm-svn: 271678
34 lines
1.2 KiB
LLVM
34 lines
1.2 KiB
LLVM
; RUN: llc -mtriple=thumbv7m-arm-none-eabi -mcpu=cortex-m3 < %s | FileCheck %s
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%struct.mystruct = type { [31 x i8] }
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@.str = private unnamed_addr constant [31 x i8] c"012345678901234567890123456789\00", align 1
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@.str.1 = private unnamed_addr constant [21 x i8] c"01234567890123456789\00", align 1
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@myglobal = common global %struct.mystruct zeroinitializer, align 1
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define void @foo() #0 {
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entry:
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; CHECK-LABEL: foo:
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; CHECK: __aeabi_memcpy
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; CHECK-NOT: ldm
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%mystring = alloca [31 x i8], align 1
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%0 = getelementptr inbounds [31 x i8], [31 x i8]* %mystring, i32 0, i32 0
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %0, i8* getelementptr inbounds ([31 x i8], [31 x i8]* @.str, i32 0, i32 0), i32 31, i32 1, i1 false)
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ret void
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}
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define void @bar() #0 {
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entry:
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; CHECK-LABEL: bar:
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; CHECK-NOT: __aeabi_memcpy
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%mystring = alloca [31 x i8], align 1
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%0 = getelementptr inbounds [31 x i8], [31 x i8]* %mystring, i32 0, i32 0
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %0, i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str.1, i32 0, i32 0), i32 21, i32 1, i1 false)
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ret void
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}
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declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture readonly, i32, i32, i1) #1
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attributes #0 = { minsize noinline nounwind optsize }
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