From 4173ed1382facb3439d5187ef7630225fa1f726b Mon Sep 17 00:00:00 2001 From: Florian Hahn Date: Wed, 29 Mar 2023 17:47:41 +0100 Subject: [PATCH] [LV] Add test cases for global struct dereferencability. Currently LLVM fails to determine that conditional loads in @accesses_to_struct_dereferenceable are dereferenceable unconditionally. --- .../LoopVectorize/load-of-struct-deref-pred.ll | 380 +++++++++++++++++++++ 1 file changed, 380 insertions(+) create mode 100644 llvm/test/Transforms/LoopVectorize/load-of-struct-deref-pred.ll diff --git a/llvm/test/Transforms/LoopVectorize/load-of-struct-deref-pred.ll b/llvm/test/Transforms/LoopVectorize/load-of-struct-deref-pred.ll new file mode 100644 index 0000000..527f981 --- /dev/null +++ b/llvm/test/Transforms/LoopVectorize/load-of-struct-deref-pred.ll @@ -0,0 +1,380 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2 +; RUN: opt -passes=loop-vectorize -force-vector-width=4 -force-vector-interleave=1 -S %s | FileCheck %s + +target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128" + +%struct.Foo = type { [32000 x i32], [32000 x i32] } + +@foo = global %struct.Foo zeroinitializer, align 4 + +define void @accesses_to_struct_dereferenceable(ptr noalias %dst) { +; CHECK-LABEL: define void @accesses_to_struct_dereferenceable +; CHECK-SAME: (ptr noalias [[DST:%.*]]) { +; CHECK-NEXT: entry: +; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] +; CHECK: vector.ph: +; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] +; CHECK: vector.body: +; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[PRED_LOAD_CONTINUE6:%.*]] ] +; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0 +; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i32, ptr [[DST]], i64 [[TMP0]] +; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i32, ptr [[TMP1]], i32 0 +; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP2]], align 4 +; CHECK-NEXT: [[TMP3:%.*]] = icmp ult <4 x i32> [[WIDE_LOAD]], zeroinitializer +; CHECK-NEXT: [[TMP4:%.*]] = xor <4 x i1> [[TMP3]], +; CHECK-NEXT: [[TMP5:%.*]] = extractelement <4 x i1> [[TMP4]], i32 0 +; CHECK-NEXT: br i1 [[TMP5]], label [[PRED_LOAD_IF:%.*]], label [[PRED_LOAD_CONTINUE:%.*]] +; CHECK: pred.load.if: +; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds [[STRUCT_FOO:%.*]], ptr @foo, i64 0, i32 1, i64 [[TMP0]] +; CHECK-NEXT: [[TMP7:%.*]] = load i32, ptr [[TMP6]], align 4 +; CHECK-NEXT: [[TMP8:%.*]] = insertelement <4 x i32> poison, i32 [[TMP7]], i32 0 +; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE]] +; CHECK: pred.load.continue: +; CHECK-NEXT: [[TMP9:%.*]] = phi <4 x i32> [ poison, [[VECTOR_BODY]] ], [ [[TMP8]], [[PRED_LOAD_IF]] ] +; CHECK-NEXT: [[TMP10:%.*]] = extractelement <4 x i1> [[TMP4]], i32 1 +; CHECK-NEXT: br i1 [[TMP10]], label [[PRED_LOAD_IF1:%.*]], label [[PRED_LOAD_CONTINUE2:%.*]] +; CHECK: pred.load.if1: +; CHECK-NEXT: [[TMP11:%.*]] = add i64 [[INDEX]], 1 +; CHECK-NEXT: [[TMP12:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 1, i64 [[TMP11]] +; CHECK-NEXT: [[TMP13:%.*]] = load i32, ptr [[TMP12]], align 4 +; CHECK-NEXT: [[TMP14:%.*]] = insertelement <4 x i32> [[TMP9]], i32 [[TMP13]], i32 1 +; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE2]] +; CHECK: pred.load.continue2: +; CHECK-NEXT: [[TMP15:%.*]] = phi <4 x i32> [ [[TMP9]], [[PRED_LOAD_CONTINUE]] ], [ [[TMP14]], [[PRED_LOAD_IF1]] ] +; CHECK-NEXT: [[TMP16:%.*]] = extractelement <4 x i1> [[TMP4]], i32 2 +; CHECK-NEXT: br i1 [[TMP16]], label [[PRED_LOAD_IF3:%.*]], label [[PRED_LOAD_CONTINUE4:%.*]] +; CHECK: pred.load.if3: +; CHECK-NEXT: [[TMP17:%.*]] = add i64 [[INDEX]], 2 +; CHECK-NEXT: [[TMP18:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 1, i64 [[TMP17]] +; CHECK-NEXT: [[TMP19:%.*]] = load i32, ptr [[TMP18]], align 4 +; CHECK-NEXT: [[TMP20:%.*]] = insertelement <4 x i32> [[TMP15]], i32 [[TMP19]], i32 2 +; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE4]] +; CHECK: pred.load.continue4: +; CHECK-NEXT: [[TMP21:%.*]] = phi <4 x i32> [ [[TMP15]], [[PRED_LOAD_CONTINUE2]] ], [ [[TMP20]], [[PRED_LOAD_IF3]] ] +; CHECK-NEXT: [[TMP22:%.*]] = extractelement <4 x i1> [[TMP4]], i32 3 +; CHECK-NEXT: br i1 [[TMP22]], label [[PRED_LOAD_IF5:%.*]], label [[PRED_LOAD_CONTINUE6]] +; CHECK: pred.load.if5: +; CHECK-NEXT: [[TMP23:%.*]] = add i64 [[INDEX]], 3 +; CHECK-NEXT: [[TMP24:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 1, i64 [[TMP23]] +; CHECK-NEXT: [[TMP25:%.*]] = load i32, ptr [[TMP24]], align 4 +; CHECK-NEXT: [[TMP26:%.*]] = insertelement <4 x i32> [[TMP21]], i32 [[TMP25]], i32 3 +; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE6]] +; CHECK: pred.load.continue6: +; CHECK-NEXT: [[TMP27:%.*]] = phi <4 x i32> [ [[TMP21]], [[PRED_LOAD_CONTINUE4]] ], [ [[TMP26]], [[PRED_LOAD_IF5]] ] +; CHECK-NEXT: [[TMP28:%.*]] = getelementptr [[STRUCT_FOO]], ptr @foo, i64 0, i32 0, i64 [[TMP0]] +; CHECK-NEXT: [[TMP29:%.*]] = getelementptr i32, ptr [[TMP28]], i32 0 +; CHECK-NEXT: [[WIDE_LOAD7:%.*]] = load <4 x i32>, ptr [[TMP29]], align 4 +; CHECK-NEXT: [[PREDPHI:%.*]] = select <4 x i1> [[TMP4]], <4 x i32> [[TMP27]], <4 x i32> [[WIDE_LOAD7]] +; CHECK-NEXT: [[TMP30:%.*]] = getelementptr inbounds i32, ptr [[TMP1]], i32 0 +; CHECK-NEXT: store <4 x i32> [[PREDPHI]], ptr [[TMP30]], align 4 +; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4 +; CHECK-NEXT: [[TMP31:%.*]] = icmp eq i64 [[INDEX_NEXT]], 32000 +; CHECK-NEXT: br i1 [[TMP31]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]] +; CHECK: middle.block: +; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 32000, 32000 +; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]] +; CHECK: scalar.ph: +; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 32000, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ] +; CHECK-NEXT: br label [[LOOP_HEADER:%.*]] +; CHECK: loop.header: +; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ] +; CHECK-NEXT: [[GEP_DST:%.*]] = getelementptr inbounds i32, ptr [[DST]], i64 [[IV]] +; CHECK-NEXT: [[D:%.*]] = load i32, ptr [[GEP_DST]], align 4 +; CHECK-NEXT: [[CMP3:%.*]] = icmp ult i32 [[D]], 0 +; CHECK-NEXT: br i1 [[CMP3]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]] +; CHECK: if.then: +; CHECK-NEXT: [[GEP_A:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 0, i64 [[IV]] +; CHECK-NEXT: [[L_A:%.*]] = load i32, ptr [[GEP_A]], align 4 +; CHECK-NEXT: br label [[LOOP_LATCH]] +; CHECK: if.else: +; CHECK-NEXT: [[GEP_B:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 1, i64 [[IV]] +; CHECK-NEXT: [[L_B:%.*]] = load i32, ptr [[GEP_B]], align 4 +; CHECK-NEXT: br label [[LOOP_LATCH]] +; CHECK: loop.latch: +; CHECK-NEXT: [[TMP_0:%.*]] = phi i32 [ [[L_A]], [[IF_THEN]] ], [ [[L_B]], [[IF_ELSE]] ] +; CHECK-NEXT: store i32 [[TMP_0]], ptr [[GEP_DST]], align 4 +; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1 +; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[IV_NEXT]], 32000 +; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[EXIT]], label [[LOOP_HEADER]], !llvm.loop [[LOOP3:![0-9]+]] +; CHECK: exit: +; CHECK-NEXT: ret void +; +entry: + br label %loop.header + +loop.header: + %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ] + %gep.dst = getelementptr inbounds i32, ptr %dst, i64 %iv + %d = load i32, ptr %gep.dst, align 4 + %cmp3 = icmp ult i32 %d, 0 + br i1 %cmp3, label %if.then, label %if.else + +if.then: + %gep.a = getelementptr inbounds %struct.Foo, ptr @foo, i64 0, i32 0, i64 %iv + %l.a = load i32, ptr %gep.a, align 4 + br label %loop.latch + +if.else: + %gep.b = getelementptr inbounds %struct.Foo, ptr @foo, i64 0, i32 1, i64 %iv + %l.b = load i32, ptr %gep.b, align 4 + br label %loop.latch + +loop.latch: + %tmp.0 = phi i32 [ %l.a, %if.then ], [ %l.b, %if.else ] + store i32 %tmp.0, ptr %gep.dst, align 4 + %iv.next = add nuw nsw i64 %iv, 1 + %exitcond.not = icmp eq i64 %iv.next, 32000 + br i1 %exitcond.not, label %exit, label %loop.header + +exit: + ret void +} + +define void @accesses_to_struct_may_not_be_dereferenceable_due_to_loop_bound(ptr noalias %dst) { +; CHECK-LABEL: define void @accesses_to_struct_may_not_be_dereferenceable_due_to_loop_bound +; CHECK-SAME: (ptr noalias [[DST:%.*]]) { +; CHECK-NEXT: entry: +; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] +; CHECK: vector.ph: +; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] +; CHECK: vector.body: +; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[PRED_LOAD_CONTINUE6:%.*]] ] +; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0 +; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i32, ptr [[DST]], i64 [[TMP0]] +; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i32, ptr [[TMP1]], i32 0 +; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP2]], align 4 +; CHECK-NEXT: [[TMP3:%.*]] = icmp ult <4 x i32> [[WIDE_LOAD]], zeroinitializer +; CHECK-NEXT: [[TMP4:%.*]] = xor <4 x i1> [[TMP3]], +; CHECK-NEXT: [[TMP5:%.*]] = extractelement <4 x i1> [[TMP4]], i32 0 +; CHECK-NEXT: br i1 [[TMP5]], label [[PRED_LOAD_IF:%.*]], label [[PRED_LOAD_CONTINUE:%.*]] +; CHECK: pred.load.if: +; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds [[STRUCT_FOO:%.*]], ptr @foo, i64 0, i32 1, i64 [[TMP0]] +; CHECK-NEXT: [[TMP7:%.*]] = load i32, ptr [[TMP6]], align 4 +; CHECK-NEXT: [[TMP8:%.*]] = insertelement <4 x i32> poison, i32 [[TMP7]], i32 0 +; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE]] +; CHECK: pred.load.continue: +; CHECK-NEXT: [[TMP9:%.*]] = phi <4 x i32> [ poison, [[VECTOR_BODY]] ], [ [[TMP8]], [[PRED_LOAD_IF]] ] +; CHECK-NEXT: [[TMP10:%.*]] = extractelement <4 x i1> [[TMP4]], i32 1 +; CHECK-NEXT: br i1 [[TMP10]], label [[PRED_LOAD_IF1:%.*]], label [[PRED_LOAD_CONTINUE2:%.*]] +; CHECK: pred.load.if1: +; CHECK-NEXT: [[TMP11:%.*]] = add i64 [[INDEX]], 1 +; CHECK-NEXT: [[TMP12:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 1, i64 [[TMP11]] +; CHECK-NEXT: [[TMP13:%.*]] = load i32, ptr [[TMP12]], align 4 +; CHECK-NEXT: [[TMP14:%.*]] = insertelement <4 x i32> [[TMP9]], i32 [[TMP13]], i32 1 +; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE2]] +; CHECK: pred.load.continue2: +; CHECK-NEXT: [[TMP15:%.*]] = phi <4 x i32> [ [[TMP9]], [[PRED_LOAD_CONTINUE]] ], [ [[TMP14]], [[PRED_LOAD_IF1]] ] +; CHECK-NEXT: [[TMP16:%.*]] = extractelement <4 x i1> [[TMP4]], i32 2 +; CHECK-NEXT: br i1 [[TMP16]], label [[PRED_LOAD_IF3:%.*]], label [[PRED_LOAD_CONTINUE4:%.*]] +; CHECK: pred.load.if3: +; CHECK-NEXT: [[TMP17:%.*]] = add i64 [[INDEX]], 2 +; CHECK-NEXT: [[TMP18:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 1, i64 [[TMP17]] +; CHECK-NEXT: [[TMP19:%.*]] = load i32, ptr [[TMP18]], align 4 +; CHECK-NEXT: [[TMP20:%.*]] = insertelement <4 x i32> [[TMP15]], i32 [[TMP19]], i32 2 +; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE4]] +; CHECK: pred.load.continue4: +; CHECK-NEXT: [[TMP21:%.*]] = phi <4 x i32> [ [[TMP15]], [[PRED_LOAD_CONTINUE2]] ], [ [[TMP20]], [[PRED_LOAD_IF3]] ] +; CHECK-NEXT: [[TMP22:%.*]] = extractelement <4 x i1> [[TMP4]], i32 3 +; CHECK-NEXT: br i1 [[TMP22]], label [[PRED_LOAD_IF5:%.*]], label [[PRED_LOAD_CONTINUE6]] +; CHECK: pred.load.if5: +; CHECK-NEXT: [[TMP23:%.*]] = add i64 [[INDEX]], 3 +; CHECK-NEXT: [[TMP24:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 1, i64 [[TMP23]] +; CHECK-NEXT: [[TMP25:%.*]] = load i32, ptr [[TMP24]], align 4 +; CHECK-NEXT: [[TMP26:%.*]] = insertelement <4 x i32> [[TMP21]], i32 [[TMP25]], i32 3 +; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE6]] +; CHECK: pred.load.continue6: +; CHECK-NEXT: [[TMP27:%.*]] = phi <4 x i32> [ [[TMP21]], [[PRED_LOAD_CONTINUE4]] ], [ [[TMP26]], [[PRED_LOAD_IF5]] ] +; CHECK-NEXT: [[TMP28:%.*]] = getelementptr [[STRUCT_FOO]], ptr @foo, i64 0, i32 0, i64 [[TMP0]] +; CHECK-NEXT: [[TMP29:%.*]] = getelementptr i32, ptr [[TMP28]], i32 0 +; CHECK-NEXT: [[WIDE_LOAD7:%.*]] = load <4 x i32>, ptr [[TMP29]], align 4 +; CHECK-NEXT: [[PREDPHI:%.*]] = select <4 x i1> [[TMP4]], <4 x i32> [[TMP27]], <4 x i32> [[WIDE_LOAD7]] +; CHECK-NEXT: [[TMP30:%.*]] = getelementptr inbounds i32, ptr [[TMP1]], i32 0 +; CHECK-NEXT: store <4 x i32> [[PREDPHI]], ptr [[TMP30]], align 4 +; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4 +; CHECK-NEXT: [[TMP31:%.*]] = icmp eq i64 [[INDEX_NEXT]], 32000 +; CHECK-NEXT: br i1 [[TMP31]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]] +; CHECK: middle.block: +; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 32001, 32000 +; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]] +; CHECK: scalar.ph: +; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 32000, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ] +; CHECK-NEXT: br label [[LOOP_HEADER:%.*]] +; CHECK: loop.header: +; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ] +; CHECK-NEXT: [[GEP_DST:%.*]] = getelementptr inbounds i32, ptr [[DST]], i64 [[IV]] +; CHECK-NEXT: [[D:%.*]] = load i32, ptr [[GEP_DST]], align 4 +; CHECK-NEXT: [[CMP3:%.*]] = icmp ult i32 [[D]], 0 +; CHECK-NEXT: br i1 [[CMP3]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]] +; CHECK: if.then: +; CHECK-NEXT: [[GEP_A:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 0, i64 [[IV]] +; CHECK-NEXT: [[L_A:%.*]] = load i32, ptr [[GEP_A]], align 4 +; CHECK-NEXT: br label [[LOOP_LATCH]] +; CHECK: if.else: +; CHECK-NEXT: [[GEP_B:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 1, i64 [[IV]] +; CHECK-NEXT: [[L_B:%.*]] = load i32, ptr [[GEP_B]], align 4 +; CHECK-NEXT: br label [[LOOP_LATCH]] +; CHECK: loop.latch: +; CHECK-NEXT: [[TMP_0:%.*]] = phi i32 [ [[L_A]], [[IF_THEN]] ], [ [[L_B]], [[IF_ELSE]] ] +; CHECK-NEXT: store i32 [[TMP_0]], ptr [[GEP_DST]], align 4 +; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1 +; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[IV_NEXT]], 32001 +; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[EXIT]], label [[LOOP_HEADER]], !llvm.loop [[LOOP5:![0-9]+]] +; CHECK: exit: +; CHECK-NEXT: ret void +; +entry: + br label %loop.header + +loop.header: + %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ] + %gep.dst = getelementptr inbounds i32, ptr %dst, i64 %iv + %d = load i32, ptr %gep.dst, align 4 + %cmp3 = icmp ult i32 %d, 0 + br i1 %cmp3, label %if.then, label %if.else + +if.then: + %gep.a = getelementptr inbounds %struct.Foo, ptr @foo, i64 0, i32 0, i64 %iv + %l.a = load i32, ptr %gep.a, align 4 + br label %loop.latch + +if.else: + %gep.b = getelementptr inbounds %struct.Foo, ptr @foo, i64 0, i32 1, i64 %iv + %l.b = load i32, ptr %gep.b, align 4 + br label %loop.latch + +loop.latch: + %tmp.0 = phi i32 [ %l.a, %if.then ], [ %l.b, %if.else ] + store i32 %tmp.0, ptr %gep.dst, align 4 + %iv.next = add nuw nsw i64 %iv, 1 + %exitcond.not = icmp eq i64 %iv.next, 32001 + br i1 %exitcond.not, label %exit, label %loop.header + +exit: + ret void +} + +define void @accesses_to_struct_may_not_be_dereferenceable_access_size(ptr noalias %dst) { +; CHECK-LABEL: define void @accesses_to_struct_may_not_be_dereferenceable_access_size +; CHECK-SAME: (ptr noalias [[DST:%.*]]) { +; CHECK-NEXT: entry: +; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] +; CHECK: vector.ph: +; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] +; CHECK: vector.body: +; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[PRED_LOAD_CONTINUE6:%.*]] ] +; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0 +; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i32, ptr [[DST]], i64 [[TMP0]] +; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i32, ptr [[TMP1]], i32 0 +; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP2]], align 4 +; CHECK-NEXT: [[TMP3:%.*]] = icmp ult <4 x i32> [[WIDE_LOAD]], zeroinitializer +; CHECK-NEXT: [[TMP4:%.*]] = xor <4 x i1> [[TMP3]], +; CHECK-NEXT: [[TMP5:%.*]] = extractelement <4 x i1> [[TMP4]], i32 0 +; CHECK-NEXT: br i1 [[TMP5]], label [[PRED_LOAD_IF:%.*]], label [[PRED_LOAD_CONTINUE:%.*]] +; CHECK: pred.load.if: +; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds [[STRUCT_FOO:%.*]], ptr @foo, i64 0, i32 1, i64 [[TMP0]] +; CHECK-NEXT: [[TMP7:%.*]] = load i64, ptr [[TMP6]], align 4 +; CHECK-NEXT: [[TMP8:%.*]] = insertelement <4 x i64> poison, i64 [[TMP7]], i32 0 +; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE]] +; CHECK: pred.load.continue: +; CHECK-NEXT: [[TMP9:%.*]] = phi <4 x i64> [ poison, [[VECTOR_BODY]] ], [ [[TMP8]], [[PRED_LOAD_IF]] ] +; CHECK-NEXT: [[TMP10:%.*]] = extractelement <4 x i1> [[TMP4]], i32 1 +; CHECK-NEXT: br i1 [[TMP10]], label [[PRED_LOAD_IF1:%.*]], label [[PRED_LOAD_CONTINUE2:%.*]] +; CHECK: pred.load.if1: +; CHECK-NEXT: [[TMP11:%.*]] = add i64 [[INDEX]], 1 +; CHECK-NEXT: [[TMP12:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 1, i64 [[TMP11]] +; CHECK-NEXT: [[TMP13:%.*]] = load i64, ptr [[TMP12]], align 4 +; CHECK-NEXT: [[TMP14:%.*]] = insertelement <4 x i64> [[TMP9]], i64 [[TMP13]], i32 1 +; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE2]] +; CHECK: pred.load.continue2: +; CHECK-NEXT: [[TMP15:%.*]] = phi <4 x i64> [ [[TMP9]], [[PRED_LOAD_CONTINUE]] ], [ [[TMP14]], [[PRED_LOAD_IF1]] ] +; CHECK-NEXT: [[TMP16:%.*]] = extractelement <4 x i1> [[TMP4]], i32 2 +; CHECK-NEXT: br i1 [[TMP16]], label [[PRED_LOAD_IF3:%.*]], label [[PRED_LOAD_CONTINUE4:%.*]] +; CHECK: pred.load.if3: +; CHECK-NEXT: [[TMP17:%.*]] = add i64 [[INDEX]], 2 +; CHECK-NEXT: [[TMP18:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 1, i64 [[TMP17]] +; CHECK-NEXT: [[TMP19:%.*]] = load i64, ptr [[TMP18]], align 4 +; CHECK-NEXT: [[TMP20:%.*]] = insertelement <4 x i64> [[TMP15]], i64 [[TMP19]], i32 2 +; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE4]] +; CHECK: pred.load.continue4: +; CHECK-NEXT: [[TMP21:%.*]] = phi <4 x i64> [ [[TMP15]], [[PRED_LOAD_CONTINUE2]] ], [ [[TMP20]], [[PRED_LOAD_IF3]] ] +; CHECK-NEXT: [[TMP22:%.*]] = extractelement <4 x i1> [[TMP4]], i32 3 +; CHECK-NEXT: br i1 [[TMP22]], label [[PRED_LOAD_IF5:%.*]], label [[PRED_LOAD_CONTINUE6]] +; CHECK: pred.load.if5: +; CHECK-NEXT: [[TMP23:%.*]] = add i64 [[INDEX]], 3 +; CHECK-NEXT: [[TMP24:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 1, i64 [[TMP23]] +; CHECK-NEXT: [[TMP25:%.*]] = load i64, ptr [[TMP24]], align 4 +; CHECK-NEXT: [[TMP26:%.*]] = insertelement <4 x i64> [[TMP21]], i64 [[TMP25]], i32 3 +; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE6]] +; CHECK: pred.load.continue6: +; CHECK-NEXT: [[TMP27:%.*]] = phi <4 x i64> [ [[TMP21]], [[PRED_LOAD_CONTINUE4]] ], [ [[TMP26]], [[PRED_LOAD_IF5]] ] +; CHECK-NEXT: [[TMP28:%.*]] = trunc <4 x i64> [[TMP27]] to <4 x i32> +; CHECK-NEXT: [[TMP29:%.*]] = getelementptr [[STRUCT_FOO]], ptr @foo, i64 0, i32 0, i64 [[TMP0]] +; CHECK-NEXT: [[TMP30:%.*]] = getelementptr i32, ptr [[TMP29]], i32 0 +; CHECK-NEXT: [[WIDE_LOAD7:%.*]] = load <4 x i32>, ptr [[TMP30]], align 4 +; CHECK-NEXT: [[PREDPHI:%.*]] = select <4 x i1> [[TMP4]], <4 x i32> [[TMP28]], <4 x i32> [[WIDE_LOAD7]] +; CHECK-NEXT: [[TMP31:%.*]] = getelementptr inbounds i32, ptr [[TMP1]], i32 0 +; CHECK-NEXT: store <4 x i32> [[PREDPHI]], ptr [[TMP31]], align 4 +; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4 +; CHECK-NEXT: [[TMP32:%.*]] = icmp eq i64 [[INDEX_NEXT]], 32000 +; CHECK-NEXT: br i1 [[TMP32]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]] +; CHECK: middle.block: +; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 32000, 32000 +; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]] +; CHECK: scalar.ph: +; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 32000, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ] +; CHECK-NEXT: br label [[LOOP_HEADER:%.*]] +; CHECK: loop.header: +; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ] +; CHECK-NEXT: [[GEP_DST:%.*]] = getelementptr inbounds i32, ptr [[DST]], i64 [[IV]] +; CHECK-NEXT: [[D:%.*]] = load i32, ptr [[GEP_DST]], align 4 +; CHECK-NEXT: [[CMP3:%.*]] = icmp ult i32 [[D]], 0 +; CHECK-NEXT: br i1 [[CMP3]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]] +; CHECK: if.then: +; CHECK-NEXT: [[GEP_A:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 0, i64 [[IV]] +; CHECK-NEXT: [[L_A:%.*]] = load i32, ptr [[GEP_A]], align 4 +; CHECK-NEXT: br label [[LOOP_LATCH]] +; CHECK: if.else: +; CHECK-NEXT: [[GEP_B:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 1, i64 [[IV]] +; CHECK-NEXT: [[L_B:%.*]] = load i64, ptr [[GEP_B]], align 4 +; CHECK-NEXT: [[T:%.*]] = trunc i64 [[L_B]] to i32 +; CHECK-NEXT: br label [[LOOP_LATCH]] +; CHECK: loop.latch: +; CHECK-NEXT: [[TMP_0:%.*]] = phi i32 [ [[L_A]], [[IF_THEN]] ], [ [[T]], [[IF_ELSE]] ] +; CHECK-NEXT: store i32 [[TMP_0]], ptr [[GEP_DST]], align 4 +; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1 +; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[IV_NEXT]], 32000 +; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[EXIT]], label [[LOOP_HEADER]], !llvm.loop [[LOOP7:![0-9]+]] +; CHECK: exit: +; CHECK-NEXT: ret void +; +entry: + br label %loop.header + +loop.header: + %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ] + %gep.dst = getelementptr inbounds i32, ptr %dst, i64 %iv + %d = load i32, ptr %gep.dst, align 4 + %cmp3 = icmp ult i32 %d, 0 + br i1 %cmp3, label %if.then, label %if.else + +if.then: + %gep.a = getelementptr inbounds %struct.Foo, ptr @foo, i64 0, i32 0, i64 %iv + %l.a = load i32, ptr %gep.a, align 4 + br label %loop.latch + +if.else: + %gep.b = getelementptr inbounds %struct.Foo, ptr @foo, i64 0, i32 1, i64 %iv + %l.b = load i64, ptr %gep.b, align 4 + %t = trunc i64 %l.b to i32 + br label %loop.latch + +loop.latch: + %tmp.0 = phi i32 [ %l.a, %if.then ], [ %t, %if.else ] + store i32 %tmp.0, ptr %gep.dst, align 4 + %iv.next = add nuw nsw i64 %iv, 1 + %exitcond.not = icmp eq i64 %iv.next, 32000 + br i1 %exitcond.not, label %exit, label %loop.header + +exit: + ret void +} -- 2.7.4