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a2446f8d17
memset/memcpy aren't fully supported yet. We should invert this test once they are supported. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251534 91177308-0d34-0410-b5e6-96231b3b80d8
54 lines
1.4 KiB
LLVM
54 lines
1.4 KiB
LLVM
; RUN: opt -loop-idiom -S < %s -march=wasm32 | FileCheck %s
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target datalayout = "e-p:32:32-i64:64-n32:64-S128"
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target triple = "wasm32-unknown-unknown"
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; Make sure loop-idiom doesn't create memcpy or memset. These aren't well
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; supported in WebAssembly for now.
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;
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; TODO Check the patterns are recognized once memcpy / memset are supported.
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; CHECK-LABEL: @cpy(
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; CHECK-NOT: llvm.memcpy
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; CHECK: load
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; CHECK: store
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define void @cpy(i64 %Size) {
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bb.nph:
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%Base = alloca i8, i32 10000
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%Dest = alloca i8, i32 10000
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br label %for.body
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for.body:
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%indvar = phi i64 [ 0, %bb.nph ], [ %indvar.next, %for.body ]
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%I.0.014 = getelementptr i8, i8* %Base, i64 %indvar
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%DestI = getelementptr i8, i8* %Dest, i64 %indvar
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%V = load i8, i8* %I.0.014, align 1
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store i8 %V, i8* %DestI, align 1
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%indvar.next = add i64 %indvar, 1
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%exitcond = icmp eq i64 %indvar.next, %Size
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br i1 %exitcond, label %for.end, label %for.body
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for.end:
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ret void
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}
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; CHECK-LABEL: @set(
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; CHECK-NOT: llvm.memset
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; CHECK: store
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define void @set(i8* %Base, i64 %Size) {
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bb.nph:
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br label %for.body
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for.body:
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%indvar = phi i64 [ 0, %bb.nph ], [ %indvar.next, %for.body ]
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%I.0.014 = getelementptr i8, i8* %Base, i64 %indvar
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store i8 0, i8* %I.0.014, align 1
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%indvar.next = add i64 %indvar, 1
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%exitcond = icmp eq i64 %indvar.next, %Size
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br i1 %exitcond, label %for.end, label %for.body
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for.end:
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ret void
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}
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