| ; RUN: opt < %s -memcpyopt -S | FileCheck %s |
| |
| ; All the stores in this example should be merged into a single memset. |
| |
| target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128" |
| target triple = "i386-apple-darwin8" |
| |
| define void @test1(i8 signext %c) nounwind { |
| entry: |
| %x = alloca [19 x i8] ; <[19 x i8]*> [#uses=20] |
| %tmp = getelementptr [19 x i8]* %x, i32 0, i32 0 ; <i8*> [#uses=1] |
| store i8 %c, i8* %tmp, align 1 |
| %tmp5 = getelementptr [19 x i8]* %x, i32 0, i32 1 ; <i8*> [#uses=1] |
| store i8 %c, i8* %tmp5, align 1 |
| %tmp9 = getelementptr [19 x i8]* %x, i32 0, i32 2 ; <i8*> [#uses=1] |
| store i8 %c, i8* %tmp9, align 1 |
| %tmp13 = getelementptr [19 x i8]* %x, i32 0, i32 3 ; <i8*> [#uses=1] |
| store i8 %c, i8* %tmp13, align 1 |
| %tmp17 = getelementptr [19 x i8]* %x, i32 0, i32 4 ; <i8*> [#uses=1] |
| store i8 %c, i8* %tmp17, align 1 |
| %tmp21 = getelementptr [19 x i8]* %x, i32 0, i32 5 ; <i8*> [#uses=1] |
| store i8 %c, i8* %tmp21, align 1 |
| %tmp25 = getelementptr [19 x i8]* %x, i32 0, i32 6 ; <i8*> [#uses=1] |
| store i8 %c, i8* %tmp25, align 1 |
| %tmp29 = getelementptr [19 x i8]* %x, i32 0, i32 7 ; <i8*> [#uses=1] |
| store i8 %c, i8* %tmp29, align 1 |
| %tmp33 = getelementptr [19 x i8]* %x, i32 0, i32 8 ; <i8*> [#uses=1] |
| store i8 %c, i8* %tmp33, align 1 |
| %tmp37 = getelementptr [19 x i8]* %x, i32 0, i32 9 ; <i8*> [#uses=1] |
| store i8 %c, i8* %tmp37, align 1 |
| %tmp41 = getelementptr [19 x i8]* %x, i32 0, i32 10 ; <i8*> [#uses=1] |
| store i8 %c, i8* %tmp41, align 1 |
| %tmp45 = getelementptr [19 x i8]* %x, i32 0, i32 11 ; <i8*> [#uses=1] |
| store i8 %c, i8* %tmp45, align 1 |
| %tmp49 = getelementptr [19 x i8]* %x, i32 0, i32 12 ; <i8*> [#uses=1] |
| store i8 %c, i8* %tmp49, align 1 |
| %tmp53 = getelementptr [19 x i8]* %x, i32 0, i32 13 ; <i8*> [#uses=1] |
| store i8 %c, i8* %tmp53, align 1 |
| %tmp57 = getelementptr [19 x i8]* %x, i32 0, i32 14 ; <i8*> [#uses=1] |
| store i8 %c, i8* %tmp57, align 1 |
| %tmp61 = getelementptr [19 x i8]* %x, i32 0, i32 15 ; <i8*> [#uses=1] |
| store i8 %c, i8* %tmp61, align 1 |
| %tmp65 = getelementptr [19 x i8]* %x, i32 0, i32 16 ; <i8*> [#uses=1] |
| store i8 %c, i8* %tmp65, align 1 |
| %tmp69 = getelementptr [19 x i8]* %x, i32 0, i32 17 ; <i8*> [#uses=1] |
| store i8 %c, i8* %tmp69, align 1 |
| %tmp73 = getelementptr [19 x i8]* %x, i32 0, i32 18 ; <i8*> [#uses=1] |
| store i8 %c, i8* %tmp73, align 1 |
| %tmp76 = call i32 (...)* @bar( [19 x i8]* %x ) nounwind |
| ret void |
| ; CHECK: @test1 |
| ; CHECK-NOT: store |
| ; CHECK: call void @llvm.memset.p0i8.i64 |
| ; CHECK-NOT: store |
| ; CHECK: ret |
| } |
| |
| declare i32 @bar(...) |
| |
| %struct.MV = type { i16, i16 } |
| |
| |
| define void @test2() nounwind { |
| entry: |
| %ref_idx = alloca [8 x i8] ; <[8 x i8]*> [#uses=8] |
| %left_mvd = alloca [8 x %struct.MV] ; <[8 x %struct.MV]*> [#uses=17] |
| %up_mvd = alloca [8 x %struct.MV] ; <[8 x %struct.MV]*> [#uses=17] |
| %tmp20 = getelementptr [8 x i8]* %ref_idx, i32 0, i32 7 ; <i8*> [#uses=1] |
| store i8 -1, i8* %tmp20, align 1 |
| %tmp23 = getelementptr [8 x i8]* %ref_idx, i32 0, i32 6 ; <i8*> [#uses=1] |
| store i8 -1, i8* %tmp23, align 1 |
| %tmp26 = getelementptr [8 x i8]* %ref_idx, i32 0, i32 5 ; <i8*> [#uses=1] |
| store i8 -1, i8* %tmp26, align 1 |
| %tmp29 = getelementptr [8 x i8]* %ref_idx, i32 0, i32 4 ; <i8*> [#uses=1] |
| store i8 -1, i8* %tmp29, align 1 |
| %tmp32 = getelementptr [8 x i8]* %ref_idx, i32 0, i32 3 ; <i8*> [#uses=1] |
| store i8 -1, i8* %tmp32, align 1 |
| %tmp35 = getelementptr [8 x i8]* %ref_idx, i32 0, i32 2 ; <i8*> [#uses=1] |
| store i8 -1, i8* %tmp35, align 1 |
| %tmp38 = getelementptr [8 x i8]* %ref_idx, i32 0, i32 1 ; <i8*> [#uses=1] |
| store i8 -1, i8* %tmp38, align 1 |
| %tmp41 = getelementptr [8 x i8]* %ref_idx, i32 0, i32 0 ; <i8*> [#uses=2] |
| store i8 -1, i8* %tmp41, align 1 |
| %tmp43 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 7, i32 0 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp43, align 2 |
| %tmp46 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 7, i32 1 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp46, align 2 |
| %tmp57 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 6, i32 0 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp57, align 2 |
| %tmp60 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 6, i32 1 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp60, align 2 |
| %tmp71 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 5, i32 0 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp71, align 2 |
| %tmp74 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 5, i32 1 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp74, align 2 |
| %tmp85 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 4, i32 0 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp85, align 2 |
| %tmp88 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 4, i32 1 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp88, align 2 |
| %tmp99 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 3, i32 0 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp99, align 2 |
| %tmp102 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 3, i32 1 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp102, align 2 |
| %tmp113 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 2, i32 0 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp113, align 2 |
| %tmp116 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 2, i32 1 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp116, align 2 |
| %tmp127 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 1, i32 0 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp127, align 2 |
| %tmp130 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 1, i32 1 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp130, align 2 |
| %tmp141 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 0, i32 0 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp141, align 8 |
| %tmp144 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 0, i32 1 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp144, align 2 |
| %tmp148 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 7, i32 0 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp148, align 2 |
| %tmp151 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 7, i32 1 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp151, align 2 |
| %tmp162 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 6, i32 0 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp162, align 2 |
| %tmp165 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 6, i32 1 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp165, align 2 |
| %tmp176 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 5, i32 0 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp176, align 2 |
| %tmp179 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 5, i32 1 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp179, align 2 |
| %tmp190 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 4, i32 0 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp190, align 2 |
| %tmp193 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 4, i32 1 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp193, align 2 |
| %tmp204 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 3, i32 0 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp204, align 2 |
| %tmp207 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 3, i32 1 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp207, align 2 |
| %tmp218 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 2, i32 0 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp218, align 2 |
| %tmp221 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 2, i32 1 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp221, align 2 |
| %tmp232 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 1, i32 0 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp232, align 2 |
| %tmp235 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 1, i32 1 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp235, align 2 |
| %tmp246 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 0, i32 0 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp246, align 8 |
| %tmp249 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 0, i32 1 ; <i16*> [#uses=1] |
| store i16 0, i16* %tmp249, align 2 |
| %up_mvd252 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 0 ; <%struct.MV*> [#uses=1] |
| %left_mvd253 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 0 ; <%struct.MV*> [#uses=1] |
| call void @foo( %struct.MV* %up_mvd252, %struct.MV* %left_mvd253, i8* %tmp41 ) nounwind |
| ret void |
| |
| ; CHECK: @test2 |
| ; CHECK-NOT: store |
| ; CHECK: call void @llvm.memset.p0i8.i64(i8* %tmp41, i8 -1, i64 8, i32 1, i1 false) |
| ; CHECK-NOT: store |
| ; CHECK: call void @llvm.memset.p0i8.i64(i8* %0, i8 0, i64 32, i32 8, i1 false) |
| ; CHECK-NOT: store |
| ; CHECK: call void @llvm.memset.p0i8.i64(i8* %1, i8 0, i64 32, i32 8, i1 false) |
| ; CHECK-NOT: store |
| ; CHECK: ret |
| } |
| |
| declare void @foo(%struct.MV*, %struct.MV*, i8*) |
| |
| |
| ; Store followed by memset. |
| define void @test3(i32* nocapture %P) nounwind ssp { |
| entry: |
| %arrayidx = getelementptr inbounds i32* %P, i64 1 |
| store i32 0, i32* %arrayidx, align 4 |
| %add.ptr = getelementptr inbounds i32* %P, i64 2 |
| %0 = bitcast i32* %add.ptr to i8* |
| tail call void @llvm.memset.p0i8.i64(i8* %0, i8 0, i64 11, i32 1, i1 false) |
| ret void |
| ; CHECK: @test3 |
| ; CHECK-NOT: store |
| ; CHECK: call void @llvm.memset.p0i8.i64(i8* %1, i8 0, i64 15, i32 4, i1 false) |
| } |
| |
| ; store followed by memset, different offset scenario |
| define void @test4(i32* nocapture %P) nounwind ssp { |
| entry: |
| store i32 0, i32* %P, align 4 |
| %add.ptr = getelementptr inbounds i32* %P, i64 1 |
| %0 = bitcast i32* %add.ptr to i8* |
| tail call void @llvm.memset.p0i8.i64(i8* %0, i8 0, i64 11, i32 1, i1 false) |
| ret void |
| ; CHECK: @test4 |
| ; CHECK-NOT: store |
| ; CHECK: call void @llvm.memset.p0i8.i64(i8* %1, i8 0, i64 15, i32 4, i1 false) |
| } |
| |
| declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind |
| |
| ; Memset followed by store. |
| define void @test5(i32* nocapture %P) nounwind ssp { |
| entry: |
| %add.ptr = getelementptr inbounds i32* %P, i64 2 |
| %0 = bitcast i32* %add.ptr to i8* |
| tail call void @llvm.memset.p0i8.i64(i8* %0, i8 0, i64 11, i32 1, i1 false) |
| %arrayidx = getelementptr inbounds i32* %P, i64 1 |
| store i32 0, i32* %arrayidx, align 4 |
| ret void |
| ; CHECK: @test5 |
| ; CHECK-NOT: store |
| ; CHECK: call void @llvm.memset.p0i8.i64(i8* %1, i8 0, i64 15, i32 4, i1 false) |
| } |
| |
| ;; Memset followed by memset. |
| define void @test6(i32* nocapture %P) nounwind ssp { |
| entry: |
| %0 = bitcast i32* %P to i8* |
| tail call void @llvm.memset.p0i8.i64(i8* %0, i8 0, i64 12, i32 1, i1 false) |
| %add.ptr = getelementptr inbounds i32* %P, i64 3 |
| %1 = bitcast i32* %add.ptr to i8* |
| tail call void @llvm.memset.p0i8.i64(i8* %1, i8 0, i64 12, i32 1, i1 false) |
| ret void |
| ; CHECK: @test6 |
| ; CHECK: call void @llvm.memset.p0i8.i64(i8* %2, i8 0, i64 24, i32 1, i1 false) |
| } |
| |
| ; More aggressive heuristic |
| ; rdar://9892684 |
| define void @test7(i32* nocapture %c) nounwind optsize { |
| store i32 -1, i32* %c, align 4 |
| %1 = getelementptr inbounds i32* %c, i32 1 |
| store i32 -1, i32* %1, align 4 |
| %2 = getelementptr inbounds i32* %c, i32 2 |
| store i32 -1, i32* %2, align 4 |
| %3 = getelementptr inbounds i32* %c, i32 3 |
| store i32 -1, i32* %3, align 4 |
| %4 = getelementptr inbounds i32* %c, i32 4 |
| store i32 -1, i32* %4, align 4 |
| ; CHECK: @test7 |
| ; CHECK: call void @llvm.memset.p0i8.i64(i8* %5, i8 -1, i64 20, i32 4, i1 false) |
| ret void |
| } |
| |
| %struct.test8 = type { [4 x i32] } |
| |
| define void @test8() { |
| entry: |
| %memtmp = alloca %struct.test8, align 16 |
| %0 = bitcast %struct.test8* %memtmp to <4 x i32>* |
| store <4 x i32> <i32 -1, i32 -1, i32 -1, i32 -1>, <4 x i32>* %0, align 16 |
| ret void |
| ; CHECK: @test8 |
| ; CHECK: store <4 x i32> <i32 -1, i32 -1, i32 -1, i32 -1>, <4 x i32>* %0, align 16 |
| } |
| |
| @test9buf = internal unnamed_addr global [16 x i64] zeroinitializer, align 16 |
| |
| define void @test9() nounwind { |
| store i8 -1, i8* bitcast ([16 x i64]* @test9buf to i8*), align 16 |
| store i8 -1, i8* getelementptr (i8* bitcast ([16 x i64]* @test9buf to i8*), i64 1), align 1 |
| store i8 -1, i8* getelementptr (i8* bitcast ([16 x i64]* @test9buf to i8*), i64 2), align 2 |
| store i8 -1, i8* getelementptr (i8* bitcast ([16 x i64]* @test9buf to i8*), i64 3), align 1 |
| store i8 -1, i8* getelementptr (i8* bitcast ([16 x i64]* @test9buf to i8*), i64 4), align 4 |
| store i8 -1, i8* getelementptr (i8* bitcast ([16 x i64]* @test9buf to i8*), i64 5), align 1 |
| store i8 -1, i8* getelementptr (i8* bitcast ([16 x i64]* @test9buf to i8*), i64 6), align 2 |
| store i8 -1, i8* getelementptr (i8* bitcast ([16 x i64]* @test9buf to i8*), i64 7), align 1 |
| store i8 -1, i8* bitcast (i64* getelementptr inbounds ([16 x i64]* @test9buf, i64 0, i64 1) to i8*), align 8 |
| store i8 -1, i8* getelementptr (i8* bitcast ([16 x i64]* @test9buf to i8*), i64 9), align 1 |
| store i8 -1, i8* getelementptr (i8* bitcast ([16 x i64]* @test9buf to i8*), i64 10), align 2 |
| store i8 -1, i8* getelementptr (i8* bitcast ([16 x i64]* @test9buf to i8*), i64 11), align 1 |
| store i8 -1, i8* getelementptr (i8* bitcast ([16 x i64]* @test9buf to i8*), i64 12), align 4 |
| store i8 -1, i8* getelementptr (i8* bitcast ([16 x i64]* @test9buf to i8*), i64 13), align 1 |
| store i8 -1, i8* getelementptr (i8* bitcast ([16 x i64]* @test9buf to i8*), i64 14), align 2 |
| store i8 -1, i8* getelementptr (i8* bitcast ([16 x i64]* @test9buf to i8*), i64 15), align 1 |
| ret void |
| ; CHECK: @test9( |
| ; CHECK: call void @llvm.memset.p0i8.i64(i8* bitcast ([16 x i64]* @test9buf to i8*), i8 -1, i64 16, i32 16, i1 false) |
| } |
