forked from OSchip/llvm-project
51 lines
1.7 KiB
LLVM
51 lines
1.7 KiB
LLVM
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; RUN: llc -march=hexagon -O2 -mno-pairing -mno-compound < %s | FileCheck %s
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; Test to see if we inline calls to memcpy/memmove when
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; the array size is small.
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target triple = "hexagon-unknown--elf"
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; CHECK-LABEL: f0:
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; CHECK-DAG: [[REG1:r[0-9]*]] = memw(r{{[0-9]*}}+#0)
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; CHECK-DAG: [[REG2:r[0-9]*]] = memuh(r{{[0-9]*}}+#4)
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; CHECK-DAG: [[REG3:r[0-9]*]] = memub(r{{[0-9]*}}+#6)
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; CHECK-DAG: memw(r{{[0-9]*}}+#0) = [[REG1]]
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; CHECK-DAG: memh(r{{[0-9]*}}+#4) = [[REG2]]
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; CHECK-DAG: memb(r{{[0-9]*}}+#6) = [[REG3]]
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define i32 @f0(i32* %a0) #0 {
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b0:
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%v0 = alloca [10 x i32], align 8
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%v1 = bitcast [10 x i32]* %v0 to i8*
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%v2 = bitcast i32* %a0 to i8*
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 4 %v1, i8* align 4 %v2, i32 7, i1 false)
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%v3 = getelementptr inbounds [10 x i32], [10 x i32]* %v0, i32 0, i32 0
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call void @f1(i32* %v3, i32* %a0) #0
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ret i32 0
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}
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declare void @f1(i32*, i32*)
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; CHECK-LABEL: f2:
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; CHECK-DAG: [[REG4:r[0-9]*]] = memub(r{{[0-9]*}}+#6)
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; CHECK-DAG: [[REG5:r[0-9]*]] = memuh(r{{[0-9]*}}+#4)
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; CHECK-DAG: [[REG6:r[0-9]*]] = memw(r{{[0-9]*}}+#0)
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; CHECK-DAG: memw(r{{[0-9]*}}+#0) = [[REG6]]
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; CHECK-DAG: memh(r{{[0-9]*}}+#4) = [[REG5]]
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; CHECK-DAG: memb(r{{[0-9]*}}+#6) = [[REG4]]
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define i32 @f2(i32* %a0, i32* %a1) #0 {
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b0:
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%v0 = bitcast i32* %a1 to i8*
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%v1 = bitcast i32* %a0 to i8*
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call void @llvm.memmove.p0i8.p0i8.i32(i8* align 4 %v0, i8* align 4 %v1, i32 7, i1 false)
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tail call void @f1(i32* %a1, i32* %a0) #0
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ret i32 0
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}
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declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture writeonly, i8* nocapture readonly, i32, i1) #1
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declare void @llvm.memmove.p0i8.p0i8.i32(i8* nocapture, i8* nocapture readonly, i32, i1) #1
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attributes #0 = { nounwind }
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attributes #1 = { argmemonly nounwind }
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