| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -indvars -indvars-post-increment-ranges -S | FileCheck %s |
| |
| target datalayout = "p:64:64:64-n32:64" |
| |
| ; When the IV in this loop is widened we want to widen this use as well: |
| ; icmp slt i32 %i.inc, %limit |
| ; In order to do this indvars need to prove that the narrow IV def (%i.inc) |
| ; is not-negative from the range check inside of the loop. |
| define void @test(i32* %base, i32 %limit, i32 %start) { |
| ; CHECK-LABEL: @test( |
| ; CHECK-NEXT: for.body.lr.ph: |
| ; CHECK-NEXT: [[UMAX:%.*]] = call i32 @llvm.umax.i32(i32 [[START:%.*]], i32 64) |
| ; CHECK-NEXT: [[TMP0:%.*]] = sub i32 [[UMAX]], [[START]] |
| ; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[START]], 1 |
| ; CHECK-NEXT: [[SMAX:%.*]] = call i32 @llvm.smax.i32(i32 [[LIMIT:%.*]], i32 [[TMP1]]) |
| ; CHECK-NEXT: [[TMP2:%.*]] = add i32 [[SMAX]], -1 |
| ; CHECK-NEXT: [[TMP3:%.*]] = sub i32 [[TMP2]], [[START]] |
| ; CHECK-NEXT: [[TMP4:%.*]] = freeze i32 [[TMP3]] |
| ; CHECK-NEXT: [[UMIN:%.*]] = call i32 @llvm.umin.i32(i32 [[TMP4]], i32 [[TMP0]]) |
| ; CHECK-NEXT: [[TMP5:%.*]] = icmp ne i32 [[TMP0]], [[UMIN]] |
| ; CHECK-NEXT: [[TMP6:%.*]] = icmp ne i32 [[TMP3]], [[UMIN]] |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: br i1 [[TMP5]], label [[CONTINUE:%.*]], label [[FOR_END:%.*]] |
| ; CHECK: continue: |
| ; CHECK-NEXT: br label [[FOR_INC:%.*]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: br i1 [[TMP6]], label [[FOR_BODY]], label [[FOR_END]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: br label [[EXIT:%.*]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| |
| for.body.lr.ph: |
| br label %for.body |
| |
| for.body: |
| %i = phi i32 [ %start, %for.body.lr.ph ], [ %i.inc, %for.inc ] |
| %within_limits = icmp ult i32 %i, 64 |
| br i1 %within_limits, label %continue, label %for.end |
| |
| continue: |
| %i.i64 = zext i32 %i to i64 |
| %arrayidx = getelementptr inbounds i32, i32* %base, i64 %i.i64 |
| %val = load i32, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: |
| %i.inc = add nsw nuw i32 %i, 1 |
| %cmp = icmp slt i32 %i.inc, %limit |
| br i1 %cmp, label %for.body, label %for.end |
| |
| for.end: |
| br label %exit |
| |
| exit: |
| ret void |
| } |
| |
| define void @test_false_edge(i32* %base, i32 %limit, i32 %start) { |
| ; CHECK-LABEL: @test_false_edge( |
| ; CHECK-NEXT: for.body.lr.ph: |
| ; CHECK-NEXT: [[UMAX:%.*]] = call i32 @llvm.umax.i32(i32 [[START:%.*]], i32 65) |
| ; CHECK-NEXT: [[TMP0:%.*]] = sub i32 [[UMAX]], [[START]] |
| ; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[START]], 1 |
| ; CHECK-NEXT: [[SMAX:%.*]] = call i32 @llvm.smax.i32(i32 [[LIMIT:%.*]], i32 [[TMP1]]) |
| ; CHECK-NEXT: [[TMP2:%.*]] = add i32 [[SMAX]], -1 |
| ; CHECK-NEXT: [[TMP3:%.*]] = sub i32 [[TMP2]], [[START]] |
| ; CHECK-NEXT: [[TMP4:%.*]] = freeze i32 [[TMP3]] |
| ; CHECK-NEXT: [[UMIN:%.*]] = call i32 @llvm.umin.i32(i32 [[TMP4]], i32 [[TMP0]]) |
| ; CHECK-NEXT: [[TMP5:%.*]] = icmp eq i32 [[TMP0]], [[UMIN]] |
| ; CHECK-NEXT: [[TMP6:%.*]] = icmp ne i32 [[TMP3]], [[UMIN]] |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: br i1 [[TMP5]], label [[FOR_END:%.*]], label [[CONTINUE:%.*]] |
| ; CHECK: continue: |
| ; CHECK-NEXT: br label [[FOR_INC:%.*]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: br i1 [[TMP6]], label [[FOR_BODY]], label [[FOR_END]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: br label [[EXIT:%.*]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| |
| for.body.lr.ph: |
| br label %for.body |
| |
| for.body: |
| %i = phi i32 [ %start, %for.body.lr.ph ], [ %i.inc, %for.inc ] |
| %out_of_bounds = icmp ugt i32 %i, 64 |
| br i1 %out_of_bounds, label %for.end, label %continue |
| |
| continue: |
| %i.i64 = zext i32 %i to i64 |
| %arrayidx = getelementptr inbounds i32, i32* %base, i64 %i.i64 |
| %val = load i32, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: |
| %i.inc = add nsw nuw i32 %i, 1 |
| %cmp = icmp slt i32 %i.inc, %limit |
| br i1 %cmp, label %for.body, label %for.end |
| |
| for.end: |
| br label %exit |
| |
| exit: |
| ret void |
| } |
| |
| define void @test_range_metadata(i32* %array_length_ptr, i32* %base, |
| ; CHECK-LABEL: @test_range_metadata( |
| ; CHECK-NEXT: for.body.lr.ph: |
| ; CHECK-NEXT: [[TMP0:%.*]] = zext i32 [[START:%.*]] to i64 |
| ; CHECK-NEXT: [[TMP1:%.*]] = sext i32 [[LIMIT:%.*]] to i64 |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_INC:%.*]] ], [ [[TMP0]], [[FOR_BODY_LR_PH:%.*]] ] |
| ; CHECK-NEXT: [[ARRAY_LENGTH:%.*]] = load i32, i32* [[ARRAY_LENGTH_PTR:%.*]], align 4, !range [[RNG0:![0-9]+]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = zext i32 [[ARRAY_LENGTH]] to i64 |
| ; CHECK-NEXT: [[WITHIN_LIMITS:%.*]] = icmp ult i64 [[INDVARS_IV]], [[TMP2]] |
| ; CHECK-NEXT: br i1 [[WITHIN_LIMITS]], label [[CONTINUE:%.*]], label [[FOR_END:%.*]] |
| ; CHECK: continue: |
| ; CHECK-NEXT: br label [[FOR_INC]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i64 [[INDVARS_IV_NEXT]], [[TMP1]] |
| ; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: br label [[EXIT:%.*]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| i32 %limit, i32 %start) { |
| |
| for.body.lr.ph: |
| br label %for.body |
| |
| for.body: |
| %i = phi i32 [ %start, %for.body.lr.ph ], [ %i.inc, %for.inc ] |
| %array_length = load i32, i32* %array_length_ptr, !range !{i32 0, i32 64 } |
| %within_limits = icmp ult i32 %i, %array_length |
| br i1 %within_limits, label %continue, label %for.end |
| |
| continue: |
| %i.i64 = zext i32 %i to i64 |
| %arrayidx = getelementptr inbounds i32, i32* %base, i64 %i.i64 |
| %val = load i32, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: |
| %i.inc = add nsw nuw i32 %i, 1 |
| %cmp = icmp slt i32 %i.inc, %limit |
| br i1 %cmp, label %for.body, label %for.end |
| |
| for.end: |
| br label %exit |
| |
| exit: |
| ret void |
| } |
| |
| ; Negative version of the test above, we don't know anything about |
| ; array_length_ptr range. |
| define void @test_neg(i32* %array_length_ptr, i32* %base, |
| ; CHECK-LABEL: @test_neg( |
| ; CHECK-NEXT: for.body.lr.ph: |
| ; CHECK-NEXT: [[TMP0:%.*]] = zext i32 [[START:%.*]] to i64 |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_INC:%.*]] ], [ [[TMP0]], [[FOR_BODY_LR_PH:%.*]] ] |
| ; CHECK-NEXT: [[ARRAY_LENGTH:%.*]] = load i32, i32* [[ARRAY_LENGTH_PTR:%.*]], align 4 |
| ; CHECK-NEXT: [[TMP1:%.*]] = zext i32 [[ARRAY_LENGTH]] to i64 |
| ; CHECK-NEXT: [[WITHIN_LIMITS:%.*]] = icmp ult i64 [[INDVARS_IV]], [[TMP1]] |
| ; CHECK-NEXT: br i1 [[WITHIN_LIMITS]], label [[CONTINUE:%.*]], label [[FOR_END:%.*]] |
| ; CHECK: continue: |
| ; CHECK-NEXT: br label [[FOR_INC]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[TMP2:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32 |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[TMP2]], [[LIMIT:%.*]] |
| ; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: br label [[EXIT:%.*]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| i32 %limit, i32 %start) { |
| |
| for.body.lr.ph: |
| br label %for.body |
| |
| for.body: |
| %i = phi i32 [ %start, %for.body.lr.ph ], [ %i.inc, %for.inc ] |
| %array_length = load i32, i32* %array_length_ptr |
| %within_limits = icmp ult i32 %i, %array_length |
| br i1 %within_limits, label %continue, label %for.end |
| |
| continue: |
| %i.i64 = zext i32 %i to i64 |
| %arrayidx = getelementptr inbounds i32, i32* %base, i64 %i.i64 |
| %val = load i32, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: |
| %i.inc = add nsw nuw i32 %i, 1 |
| %cmp = icmp slt i32 %i.inc, %limit |
| br i1 %cmp, label %for.body, label %for.end |
| |
| for.end: |
| br label %exit |
| |
| exit: |
| ret void |
| } |
| |
| define void @test_transitive_use(i32* %base, i32 %limit, i32 %start) { |
| ; CHECK-LABEL: @test_transitive_use( |
| ; CHECK-NEXT: for.body.lr.ph: |
| ; CHECK-NEXT: [[TMP0:%.*]] = zext i32 [[START:%.*]] to i64 |
| ; CHECK-NEXT: [[TMP1:%.*]] = sext i32 [[LIMIT:%.*]] to i64 |
| ; CHECK-NEXT: [[TMP2:%.*]] = sext i32 [[LIMIT]] to i64 |
| ; CHECK-NEXT: [[UMAX:%.*]] = call i32 @llvm.umax.i32(i32 [[START]], i32 64) |
| ; CHECK-NEXT: [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[UMAX]] to i64 |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_INC:%.*]] ], [ [[TMP0]], [[FOR_BODY_LR_PH:%.*]] ] |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[INDVARS_IV]], [[WIDE_TRIP_COUNT]] |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[CONTINUE:%.*]], label [[FOR_END:%.*]] |
| ; CHECK: continue: |
| ; CHECK-NEXT: [[TMP3:%.*]] = mul nuw nsw i64 [[INDVARS_IV]], 3 |
| ; CHECK-NEXT: [[MUL_WITHIN:%.*]] = icmp ult i64 [[TMP3]], 64 |
| ; CHECK-NEXT: br i1 [[MUL_WITHIN]], label [[GUARDED:%.*]], label [[CONTINUE_2:%.*]] |
| ; CHECK: guarded: |
| ; CHECK-NEXT: [[TMP4:%.*]] = add nuw nsw i64 [[TMP3]], 1 |
| ; CHECK-NEXT: [[RESULT:%.*]] = icmp slt i64 [[TMP4]], [[TMP1]] |
| ; CHECK-NEXT: br i1 [[RESULT]], label [[CONTINUE_2]], label [[FOR_END]] |
| ; CHECK: continue.2: |
| ; CHECK-NEXT: br label [[FOR_INC]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i64 [[INDVARS_IV_NEXT]], [[TMP2]] |
| ; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: br label [[EXIT:%.*]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| |
| for.body.lr.ph: |
| br label %for.body |
| |
| for.body: |
| %i = phi i32 [ %start, %for.body.lr.ph ], [ %i.inc, %for.inc ] |
| %within_limits = icmp ult i32 %i, 64 |
| br i1 %within_limits, label %continue, label %for.end |
| |
| continue: |
| %i.mul.3 = mul nsw nuw i32 %i, 3 |
| %mul_within = icmp ult i32 %i.mul.3, 64 |
| br i1 %mul_within, label %guarded, label %continue.2 |
| |
| guarded: |
| %i.mul.3.inc = add nsw nuw i32 %i.mul.3, 1 |
| %result = icmp slt i32 %i.mul.3.inc, %limit |
| br i1 %result, label %continue.2, label %for.end |
| |
| continue.2: |
| %i.i64 = zext i32 %i to i64 |
| %arrayidx = getelementptr inbounds i32, i32* %base, i64 %i.i64 |
| %val = load i32, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: |
| %i.inc = add nsw nuw i32 %i, 1 |
| %cmp = icmp slt i32 %i.inc, %limit |
| br i1 %cmp, label %for.body, label %for.end |
| |
| |
| for.end: |
| br label %exit |
| |
| exit: |
| ret void |
| } |
| |
| declare void @llvm.experimental.guard(i1, ...) |
| |
| define void @test_guard_one_bb(i32* %base, i32 %limit, i32 %start) { |
| ; CHECK-LABEL: @test_guard_one_bb( |
| ; CHECK-NEXT: for.body.lr.ph: |
| ; CHECK-NEXT: [[TMP0:%.*]] = zext i32 [[START:%.*]] to i64 |
| ; CHECK-NEXT: [[TMP1:%.*]] = sext i32 [[LIMIT:%.*]] to i64 |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[TMP0]], [[FOR_BODY_LR_PH:%.*]] ] |
| ; CHECK-NEXT: [[WITHIN_LIMITS:%.*]] = icmp ult i64 [[INDVARS_IV]], 64 |
| ; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[WITHIN_LIMITS]]) [ "deopt"() ] |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i64 [[INDVARS_IV_NEXT]], [[TMP1]] |
| ; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: br label [[EXIT:%.*]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| |
| for.body.lr.ph: |
| br label %for.body |
| |
| for.body: |
| %i = phi i32 [ %start, %for.body.lr.ph ], [ %i.inc, %for.body ] |
| %within_limits = icmp ult i32 %i, 64 |
| %i.i64 = zext i32 %i to i64 |
| %arrayidx = getelementptr inbounds i32, i32* %base, i64 %i.i64 |
| %val = load i32, i32* %arrayidx, align 4 |
| call void(i1, ...) @llvm.experimental.guard(i1 %within_limits) [ "deopt"() ] |
| %i.inc = add nsw nuw i32 %i, 1 |
| %cmp = icmp slt i32 %i.inc, %limit |
| br i1 %cmp, label %for.body, label %for.end |
| |
| for.end: |
| br label %exit |
| |
| exit: |
| ret void |
| } |
| |
| define void @test_guard_in_the_same_bb(i32* %base, i32 %limit, i32 %start) { |
| ; CHECK-LABEL: @test_guard_in_the_same_bb( |
| ; CHECK-NEXT: for.body.lr.ph: |
| ; CHECK-NEXT: [[TMP0:%.*]] = zext i32 [[START:%.*]] to i64 |
| ; CHECK-NEXT: [[TMP1:%.*]] = sext i32 [[LIMIT:%.*]] to i64 |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_INC:%.*]] ], [ [[TMP0]], [[FOR_BODY_LR_PH:%.*]] ] |
| ; CHECK-NEXT: [[WITHIN_LIMITS:%.*]] = icmp ult i64 [[INDVARS_IV]], 64 |
| ; CHECK-NEXT: br label [[FOR_INC]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[WITHIN_LIMITS]]) [ "deopt"() ] |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i64 [[INDVARS_IV_NEXT]], [[TMP1]] |
| ; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: br label [[EXIT:%.*]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| |
| for.body.lr.ph: |
| br label %for.body |
| |
| for.body: |
| %i = phi i32 [ %start, %for.body.lr.ph ], [ %i.inc, %for.inc ] |
| %within_limits = icmp ult i32 %i, 64 |
| %i.i64 = zext i32 %i to i64 |
| %arrayidx = getelementptr inbounds i32, i32* %base, i64 %i.i64 |
| %val = load i32, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: |
| call void(i1, ...) @llvm.experimental.guard(i1 %within_limits) [ "deopt"() ] |
| %i.inc = add nsw nuw i32 %i, 1 |
| %cmp = icmp slt i32 %i.inc, %limit |
| br i1 %cmp, label %for.body, label %for.end |
| |
| for.end: |
| br label %exit |
| |
| exit: |
| ret void |
| } |
| |
| define void @test_guard_in_idom(i32* %base, i32 %limit, i32 %start) { |
| ; CHECK-LABEL: @test_guard_in_idom( |
| ; CHECK-NEXT: for.body.lr.ph: |
| ; CHECK-NEXT: [[TMP0:%.*]] = zext i32 [[START:%.*]] to i64 |
| ; CHECK-NEXT: [[TMP1:%.*]] = sext i32 [[LIMIT:%.*]] to i64 |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_INC:%.*]] ], [ [[TMP0]], [[FOR_BODY_LR_PH:%.*]] ] |
| ; CHECK-NEXT: [[WITHIN_LIMITS:%.*]] = icmp ult i64 [[INDVARS_IV]], 64 |
| ; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[WITHIN_LIMITS]]) [ "deopt"() ] |
| ; CHECK-NEXT: br label [[FOR_INC]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i64 [[INDVARS_IV_NEXT]], [[TMP1]] |
| ; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: br label [[EXIT:%.*]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| |
| for.body.lr.ph: |
| br label %for.body |
| |
| for.body: |
| %i = phi i32 [ %start, %for.body.lr.ph ], [ %i.inc, %for.inc ] |
| %within_limits = icmp ult i32 %i, 64 |
| call void(i1, ...) @llvm.experimental.guard(i1 %within_limits) [ "deopt"() ] |
| %i.i64 = zext i32 %i to i64 |
| %arrayidx = getelementptr inbounds i32, i32* %base, i64 %i.i64 |
| %val = load i32, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: |
| %i.inc = add nsw nuw i32 %i, 1 |
| %cmp = icmp slt i32 %i.inc, %limit |
| br i1 %cmp, label %for.body, label %for.end |
| |
| for.end: |
| br label %exit |
| |
| exit: |
| ret void |
| } |
| |
| define void @test_guard_merge_ranges(i32* %base, i32 %limit, i32 %start) { |
| ; CHECK-LABEL: @test_guard_merge_ranges( |
| ; CHECK-NEXT: for.body.lr.ph: |
| ; CHECK-NEXT: [[TMP0:%.*]] = zext i32 [[START:%.*]] to i64 |
| ; CHECK-NEXT: [[TMP1:%.*]] = sext i32 [[LIMIT:%.*]] to i64 |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ], [ [[TMP0]], [[FOR_BODY_LR_PH:%.*]] ] |
| ; CHECK-NEXT: [[WITHIN_LIMITS_1:%.*]] = icmp ult i64 [[INDVARS_IV]], 64 |
| ; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[WITHIN_LIMITS_1]]) [ "deopt"() ] |
| ; CHECK-NEXT: [[WITHIN_LIMITS_2:%.*]] = icmp ult i64 [[INDVARS_IV]], 2147483647 |
| ; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[WITHIN_LIMITS_2]]) [ "deopt"() ] |
| ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i64 [[INDVARS_IV_NEXT]], [[TMP1]] |
| ; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]] |
| ; CHECK: for.end: |
| ; CHECK-NEXT: br label [[EXIT:%.*]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| |
| for.body.lr.ph: |
| br label %for.body |
| |
| for.body: |
| %i = phi i32 [ %start, %for.body.lr.ph ], [ %i.inc, %for.body ] |
| %within_limits.1 = icmp ult i32 %i, 64 |
| call void(i1, ...) @llvm.experimental.guard(i1 %within_limits.1) [ "deopt"() ] |
| %within_limits.2 = icmp ult i32 %i, 2147483647 |
| call void(i1, ...) @llvm.experimental.guard(i1 %within_limits.2) [ "deopt"() ] |
| %i.i64 = zext i32 %i to i64 |
| %arrayidx = getelementptr inbounds i32, i32* %base, i64 %i.i64 |
| %val = load i32, i32* %arrayidx, align 4 |
| %i.inc = add nsw nuw i32 %i, 1 |
| %cmp = icmp slt i32 %i.inc, %limit |
| br i1 %cmp, label %for.body, label %for.end |
| |
| for.end: |
| br label %exit |
| |
| exit: |
| ret void |
| } |
