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llvm-project/llvm/test/Transforms/ConstraintElimination/gep-arithmetic.ll
Florian Hahn 6a834d2f2b
[ConstraintElim] Use collectOffset instead of custom GEP idx iteration. 
Use collectOffset to collect scaled indices and constant offset for GEP
instead of custom code. This simplifies the logic in decomposeGEP and
allows to handle all cases supported by the generic helper.
2022-11-28 16:54:58 +00:00

658 lines
29 KiB
LLVM
Raw Blame History

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=constraint-elimination -S %s | FileCheck %s
declare void @llvm.assume(i1 noundef) #0
define i1 @gep_constant_positive_index(ptr %dst, ptr %lower, ptr %upper) {
; CHECK-LABEL: @gep_constant_positive_index(
; CHECK-NEXT: [[DST_ADD_4:%.*]] = getelementptr inbounds i8, ptr [[DST:%.*]], i64 4
; CHECK-NEXT: [[PRE_DST_LOWER:%.*]] = icmp uge ptr [[DST]], [[LOWER:%.*]]
; CHECK-NEXT: [[PRE_DST_UPPER:%.*]] = icmp ult ptr [[DST_ADD_4]], [[UPPER:%.*]]
; CHECK-NEXT: [[AND:%.*]] = and i1 [[PRE_DST_LOWER]], [[PRE_DST_UPPER]]
; CHECK-NEXT: br i1 [[AND]], label [[THEN:%.*]], label [[ELSE:%.*]]
; CHECK: then:
; CHECK-NEXT: [[CMP_DST_LOWER:%.*]] = icmp uge ptr [[DST]], [[LOWER]]
; CHECK-NEXT: [[CMP_DST_UPPER:%.*]] = icmp ult ptr [[DST]], [[UPPER]]
; CHECK-NEXT: [[RES_1:%.*]] = xor i1 true, true
; CHECK-NEXT: [[DST_ADD_3:%.*]] = getelementptr inbounds i8, ptr [[DST]], i64 3
; CHECK-NEXT: [[CMP_DST_ADD_3_LOWER:%.*]] = icmp uge ptr [[DST_ADD_3]], [[LOWER]]
; CHECK-NEXT: [[CMP_DST_ADD_3_UPPER:%.*]] = icmp ult ptr [[DST_ADD_3]], [[UPPER]]
; CHECK-NEXT: [[RES_2:%.*]] = xor i1 [[RES_1]], true
; CHECK-NEXT: [[RES_3:%.*]] = xor i1 [[RES_2]], true
; CHECK-NEXT: [[CMP_DST_ADD_4_LOWER:%.*]] = icmp uge ptr [[DST_ADD_4]], [[LOWER]]
; CHECK-NEXT: [[CMP_DST_ADD_4_UPPER:%.*]] = icmp ult ptr [[DST_ADD_4]], [[UPPER]]
; CHECK-NEXT: [[RES_4:%.*]] = xor i1 [[RES_3]], true
; CHECK-NEXT: [[RES_5:%.*]] = xor i1 [[RES_4]], true
; CHECK-NEXT: [[DST_ADD_5:%.*]] = getelementptr inbounds i8, ptr [[DST]], i64 5
; CHECK-NEXT: [[CMP_DST_ADD_5_LOWER:%.*]] = icmp uge ptr [[DST_ADD_5]], [[LOWER]]
; CHECK-NEXT: [[CMP_DST_ADD_5_UPPER:%.*]] = icmp ult ptr [[DST_ADD_5]], [[UPPER]]
; CHECK-NEXT: [[RES_6:%.*]] = xor i1 [[RES_5]], true
; CHECK-NEXT: [[RES_7:%.*]] = xor i1 [[RES_6]], [[CMP_DST_ADD_5_UPPER]]
; CHECK-NEXT: ret i1 [[RES_7]]
; CHECK: else:
; CHECK-NEXT: ret i1 false
;
%dst.add.4 = getelementptr inbounds i8, ptr %dst, i64 4
%pre.dst.lower = icmp uge ptr %dst, %lower
%pre.dst.upper = icmp ult ptr %dst.add.4, %upper
%and = and i1 %pre.dst.lower, %pre.dst.upper
br i1 %and, label %then, label %else
then:
%cmp.dst.lower = icmp uge ptr %dst, %lower
%cmp.dst.upper = icmp ult ptr %dst, %upper
%res.1 = xor i1 %cmp.dst.lower, %cmp.dst.upper
%dst.add.3 = getelementptr inbounds i8, ptr %dst, i64 3
%cmp.dst.add.3.lower = icmp uge ptr %dst.add.3, %lower
%cmp.dst.add.3.upper = icmp ult ptr %dst.add.3, %upper
%res.2 = xor i1 %res.1, %cmp.dst.add.3.lower
%res.3 = xor i1 %res.2, %cmp.dst.add.3.upper
%cmp.dst.add.4.lower = icmp uge ptr %dst.add.4, %lower
%cmp.dst.add.4.upper = icmp ult ptr %dst.add.4, %upper
%res.4 = xor i1 %res.3, %cmp.dst.add.4.lower
%res.5 = xor i1 %res.4, %cmp.dst.add.4.upper
%dst.add.5 = getelementptr inbounds i8, ptr %dst, i64 5
%cmp.dst.add.5.lower = icmp uge ptr %dst.add.5, %lower
%cmp.dst.add.5.upper = icmp ult ptr %dst.add.5, %upper
%res.6 = xor i1 %res.5, %cmp.dst.add.5.lower
%res.7 = xor i1 %res.6, %cmp.dst.add.5.upper
ret i1 %res.7
else:
ret i1 false
}
define i1 @gep_constant_negative_index(ptr %dst, ptr %lower, ptr %upper) {
; CHECK-LABEL: @gep_constant_negative_index(
; CHECK-NEXT: [[DST_SUB_4:%.*]] = getelementptr inbounds i8, ptr [[DST:%.*]], i64 -4
; CHECK-NEXT: [[PRE_DST_LOWER:%.*]] = icmp uge ptr [[DST]], [[LOWER:%.*]]
; CHECK-NEXT: [[PRE_DST_UPPER:%.*]] = icmp ult ptr [[DST_SUB_4]], [[UPPER:%.*]]
; CHECK-NEXT: [[AND:%.*]] = and i1 [[PRE_DST_LOWER]], [[PRE_DST_UPPER]]
; CHECK-NEXT: br i1 [[AND]], label [[THEN:%.*]], label [[ELSE:%.*]]
; CHECK: then:
; CHECK-NEXT: [[CMP_DST_LOWER:%.*]] = icmp uge ptr [[DST]], [[LOWER]]
; CHECK-NEXT: [[CMP_DST_UPPER:%.*]] = icmp ult ptr [[DST]], [[UPPER]]
; CHECK-NEXT: [[RES_1:%.*]] = xor i1 true, [[CMP_DST_UPPER]]
; CHECK-NEXT: [[DST_SUB_3:%.*]] = getelementptr inbounds i8, ptr [[DST]], i64 -3
; CHECK-NEXT: [[CMP_DST_SUB_3_LOWER:%.*]] = icmp uge ptr [[DST_SUB_3]], [[LOWER]]
; CHECK-NEXT: [[CMP_DST_SUB_3_UPPER:%.*]] = icmp ult ptr [[DST_SUB_3]], [[UPPER]]
; CHECK-NEXT: [[RES_2:%.*]] = xor i1 [[RES_1]], [[CMP_DST_SUB_3_LOWER]]
; CHECK-NEXT: [[RES_3:%.*]] = xor i1 [[RES_2]], [[CMP_DST_SUB_3_UPPER]]
; CHECK-NEXT: [[CMP_DST_SUB_4_LOWER:%.*]] = icmp uge ptr [[DST_SUB_4]], [[LOWER]]
; CHECK-NEXT: [[CMP_DST_SUB_4_UPPER:%.*]] = icmp ult ptr [[DST_SUB_4]], [[UPPER]]
; CHECK-NEXT: [[RES_4:%.*]] = xor i1 [[RES_3]], [[CMP_DST_SUB_4_LOWER]]
; CHECK-NEXT: [[RES_5:%.*]] = xor i1 [[RES_4]], true
; CHECK-NEXT: [[DST_SUB_5:%.*]] = getelementptr inbounds i8, ptr [[DST]], i64 -5
; CHECK-NEXT: [[CMP_DST_SUB_5_LOWER:%.*]] = icmp uge ptr [[DST_SUB_5]], [[LOWER]]
; CHECK-NEXT: [[CMP_DST_SUB_5_UPPER:%.*]] = icmp ult ptr [[DST_SUB_5]], [[UPPER]]
; CHECK-NEXT: [[RES_6:%.*]] = xor i1 [[RES_5]], [[CMP_DST_SUB_5_LOWER]]
; CHECK-NEXT: [[RES_7:%.*]] = xor i1 [[RES_6]], true
; CHECK-NEXT: ret i1 [[RES_7]]
; CHECK: else:
; CHECK-NEXT: [[ELSE_CMP_DST_LOWER:%.*]] = icmp uge ptr [[DST]], [[LOWER]]
; CHECK-NEXT: [[ELSE_CMP_DST_UPPER:%.*]] = icmp ult ptr [[DST]], [[UPPER]]
; CHECK-NEXT: [[ELSE_RES_1:%.*]] = xor i1 [[ELSE_CMP_DST_LOWER]], [[ELSE_CMP_DST_UPPER]]
; CHECK-NEXT: [[ELSE_DST_SUB_3:%.*]] = getelementptr inbounds i8, ptr [[DST]], i64 -3
; CHECK-NEXT: [[ELSE_CMP_DST_SUB_3_LOWER:%.*]] = icmp uge ptr [[ELSE_DST_SUB_3]], [[LOWER]]
; CHECK-NEXT: [[ELSE_CMP_DST_SUB_3_UPPER:%.*]] = icmp ult ptr [[ELSE_DST_SUB_3]], [[UPPER]]
; CHECK-NEXT: [[ELSE_RES_2:%.*]] = xor i1 [[ELSE_RES_1]], [[ELSE_CMP_DST_SUB_3_LOWER]]
; CHECK-NEXT: [[ELSE_RES_3:%.*]] = xor i1 [[ELSE_RES_2]], [[ELSE_CMP_DST_SUB_3_UPPER]]
; CHECK-NEXT: [[ELSE_CMP_DST_SUB_4_LOWER:%.*]] = icmp uge ptr [[DST_SUB_4]], [[LOWER]]
; CHECK-NEXT: [[ELSE_CMP_DST_SUB_4_UPPER:%.*]] = icmp ult ptr [[DST_SUB_4]], [[UPPER]]
; CHECK-NEXT: [[ELSE_RES_4:%.*]] = xor i1 [[ELSE_RES_3]], [[ELSE_CMP_DST_SUB_4_LOWER]]
; CHECK-NEXT: [[ELSE_RES_5:%.*]] = xor i1 [[ELSE_RES_4]], [[ELSE_CMP_DST_SUB_4_UPPER]]
; CHECK-NEXT: [[ELSE_DST_SUB_5:%.*]] = getelementptr inbounds i8, ptr [[DST]], i64 -5
; CHECK-NEXT: [[ELSE_CMP_DST_SUB_5_LOWER:%.*]] = icmp uge ptr [[ELSE_DST_SUB_5]], [[LOWER]]
; CHECK-NEXT: [[ELSE_CMP_DST_SUB_5_UPPER:%.*]] = icmp ult ptr [[ELSE_DST_SUB_5]], [[UPPER]]
; CHECK-NEXT: [[ELSE_RES_6:%.*]] = xor i1 [[ELSE_RES_5]], [[ELSE_CMP_DST_SUB_5_LOWER]]
; CHECK-NEXT: [[ELSE_RES_7:%.*]] = xor i1 [[ELSE_RES_6]], [[ELSE_CMP_DST_SUB_5_UPPER]]
; CHECK-NEXT: ret i1 [[ELSE_RES_7]]
;
%dst.sub.4 = getelementptr inbounds i8, ptr %dst, i64 -4
%pre.dst.lower = icmp uge ptr %dst, %lower
%pre.dst.upper = icmp ult ptr %dst.sub.4, %upper
%and = and i1 %pre.dst.lower, %pre.dst.upper
br i1 %and, label %then, label %else
then:
%cmp.dst.lower = icmp uge ptr %dst, %lower
%cmp.dst.upper = icmp ult ptr %dst, %upper
%res.1 = xor i1 %cmp.dst.lower, %cmp.dst.upper
%dst.sub.3 = getelementptr inbounds i8, ptr %dst, i64 -3
%cmp.dst.sub.3.lower = icmp uge ptr %dst.sub.3, %lower
%cmp.dst.sub.3.upper = icmp ult ptr %dst.sub.3, %upper
%res.2 = xor i1 %res.1, %cmp.dst.sub.3.lower
%res.3 = xor i1 %res.2, %cmp.dst.sub.3.upper
%cmp.dst.sub.4.lower = icmp uge ptr %dst.sub.4, %lower
%cmp.dst.sub.4.upper = icmp ult ptr %dst.sub.4, %upper
%res.4 = xor i1 %res.3, %cmp.dst.sub.4.lower
%res.5 = xor i1 %res.4, %cmp.dst.sub.4.upper
%dst.sub.5 = getelementptr inbounds i8, ptr %dst, i64 -5
%cmp.dst.sub.5.lower = icmp uge ptr %dst.sub.5, %lower
%cmp.dst.sub.5.upper = icmp ult ptr %dst.sub.5, %upper
%res.6 = xor i1 %res.5, %cmp.dst.sub.5.lower
%res.7 = xor i1 %res.6, %cmp.dst.sub.5.upper
ret i1 %res.7
else:
%else.cmp.dst.lower = icmp uge ptr %dst, %lower
%else.cmp.dst.upper = icmp ult ptr %dst, %upper
%else.res.1 = xor i1 %else.cmp.dst.lower, %else.cmp.dst.upper
%else.dst.sub.3 = getelementptr inbounds i8, ptr %dst, i64 -3
%else.cmp.dst.sub.3.lower = icmp uge ptr %else.dst.sub.3, %lower
%else.cmp.dst.sub.3.upper = icmp ult ptr %else.dst.sub.3, %upper
%else.res.2 = xor i1 %else.res.1, %else.cmp.dst.sub.3.lower
%else.res.3 = xor i1 %else.res.2, %else.cmp.dst.sub.3.upper
%else.cmp.dst.sub.4.lower = icmp uge ptr %dst.sub.4, %lower
%else.cmp.dst.sub.4.upper = icmp ult ptr %dst.sub.4, %upper
%else.res.4 = xor i1 %else.res.3, %else.cmp.dst.sub.4.lower
%else.res.5 = xor i1 %else.res.4, %else.cmp.dst.sub.4.upper
%else.dst.sub.5 = getelementptr inbounds i8, ptr %dst, i64 -5
%else.cmp.dst.sub.5.lower = icmp uge ptr %else.dst.sub.5, %lower
%else.cmp.dst.sub.5.upper = icmp ult ptr %else.dst.sub.5, %upper
%else.res.6 = xor i1 %else.res.5, %else.cmp.dst.sub.5.lower
%else.res.7 = xor i1 %else.res.6, %else.cmp.dst.sub.5.upper
ret i1 %else.res.7
}
define i4 @ptr_N_signed_positive_explicit_check_constant_step(ptr %src, ptr %lower, ptr %upper, i16 %N) {
; CHECK-LABEL: @ptr_N_signed_positive_explicit_check_constant_step(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[N_POS:%.*]] = icmp sge i16 [[N:%.*]], 0
; CHECK-NEXT: br i1 [[N_POS]], label [[ENTRY_1:%.*]], label [[TRAP_BB:%.*]]
; CHECK: entry.1:
; CHECK-NEXT: [[SRC_END:%.*]] = getelementptr inbounds i8, ptr [[SRC:%.*]], i16 [[N]]
; CHECK-NEXT: [[CMP_SRC_START:%.*]] = icmp ult ptr [[SRC]], [[LOWER:%.*]]
; CHECK-NEXT: [[CMP_SRC_END:%.*]] = icmp uge ptr [[SRC_END]], [[UPPER:%.*]]
; CHECK-NEXT: [[OR_PRECOND_0:%.*]] = or i1 [[CMP_SRC_START]], [[CMP_SRC_END]]
; CHECK-NEXT: br i1 [[OR_PRECOND_0]], label [[TRAP_BB]], label [[STEP_CHECK:%.*]]
; CHECK: trap.bb:
; CHECK-NEXT: ret i4 2
; CHECK: step.check:
; CHECK-NEXT: [[STEP_ULT_N:%.*]] = icmp ult i16 1, [[N]]
; CHECK-NEXT: br i1 [[STEP_ULT_N]], label [[PTR_CHECK:%.*]], label [[EXIT:%.*]]
; CHECK: ptr.check:
; CHECK-NEXT: [[SRC_STEP:%.*]] = getelementptr inbounds i8, ptr [[SRC]], i16 1
; CHECK-NEXT: [[CMP_STEP_START:%.*]] = icmp ult ptr [[SRC_STEP]], [[LOWER]]
; CHECK-NEXT: [[CMP_STEP_END:%.*]] = icmp uge ptr [[SRC_STEP]], [[UPPER]]
; CHECK-NEXT: [[OR_CHECK:%.*]] = or i1 false, false
; CHECK-NEXT: br i1 [[OR_CHECK]], label [[TRAP_BB]], label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: ret i4 3
;
entry:
%N.pos = icmp sge i16 %N, 0
br i1 %N.pos, label %entry.1, label %trap.bb
entry.1:
%src.end = getelementptr inbounds i8, ptr %src, i16 %N
%cmp.src.start = icmp ult ptr %src, %lower
%cmp.src.end = icmp uge ptr %src.end, %upper
%or.precond.0 = or i1 %cmp.src.start, %cmp.src.end
br i1 %or.precond.0, label %trap.bb, label %step.check
trap.bb:
ret i4 2
step.check:
%step.ult.N = icmp ult i16 1, %N
br i1 %step.ult.N, label %ptr.check, label %exit
ptr.check:
%src.step = getelementptr inbounds i8, ptr %src, i16 1
%cmp.step.start = icmp ult ptr %src.step, %lower
%cmp.step.end = icmp uge ptr %src.step, %upper
%or.check = or i1 %cmp.step.start, %cmp.step.end
br i1 %or.check, label %trap.bb, label %exit
exit:
ret i4 3
}
; Same as ptr_N_signed_positive_explicit_check_constant_step, but without inbounds.
define i4 @ptr_N_signed_positive_explicit_check_constant_step_no_inbonds(ptr %src, ptr %lower, ptr %upper, i16 %N) {
; CHECK-LABEL: @ptr_N_signed_positive_explicit_check_constant_step_no_inbonds(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[N_POS:%.*]] = icmp sge i16 [[N:%.*]], 0
; CHECK-NEXT: br i1 [[N_POS]], label [[ENTRY_1:%.*]], label [[TRAP_BB:%.*]]
; CHECK: entry.1:
; CHECK-NEXT: [[SRC_END:%.*]] = getelementptr i8, ptr [[SRC:%.*]], i16 [[N]]
; CHECK-NEXT: [[CMP_SRC_START:%.*]] = icmp ult ptr [[SRC]], [[LOWER:%.*]]
; CHECK-NEXT: [[CMP_SRC_END:%.*]] = icmp uge ptr [[SRC_END]], [[UPPER:%.*]]
; CHECK-NEXT: [[OR_PRECOND_0:%.*]] = or i1 [[CMP_SRC_START]], [[CMP_SRC_END]]
; CHECK-NEXT: br i1 [[OR_PRECOND_0]], label [[TRAP_BB]], label [[STEP_CHECK:%.*]]
; CHECK: trap.bb:
; CHECK-NEXT: ret i4 2
; CHECK: step.check:
; CHECK-NEXT: [[STEP_ULT_N:%.*]] = icmp ult i16 1, [[N]]
; CHECK-NEXT: br i1 [[STEP_ULT_N]], label [[PTR_CHECK:%.*]], label [[EXIT:%.*]]
; CHECK: ptr.check:
; CHECK-NEXT: [[SRC_STEP:%.*]] = getelementptr i8, ptr [[SRC]], i16 1
; CHECK-NEXT: [[CMP_STEP_START:%.*]] = icmp ult ptr [[SRC_STEP]], [[LOWER]]
; CHECK-NEXT: [[CMP_STEP_END:%.*]] = icmp uge ptr [[SRC_STEP]], [[UPPER]]
; CHECK-NEXT: [[OR_CHECK:%.*]] = or i1 [[CMP_STEP_START]], [[CMP_STEP_END]]
; CHECK-NEXT: br i1 [[OR_CHECK]], label [[TRAP_BB]], label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: ret i4 3
;
entry:
%N.pos = icmp sge i16 %N, 0
br i1 %N.pos, label %entry.1, label %trap.bb
entry.1:
%src.end = getelementptr i8, ptr %src, i16 %N
%cmp.src.start = icmp ult ptr %src, %lower
%cmp.src.end = icmp uge ptr %src.end, %upper
%or.precond.0 = or i1 %cmp.src.start, %cmp.src.end
br i1 %or.precond.0, label %trap.bb, label %step.check
trap.bb:
ret i4 2
step.check:
%step.ult.N = icmp ult i16 1, %N
br i1 %step.ult.N, label %ptr.check, label %exit
ptr.check:
%src.step = getelementptr i8, ptr %src, i16 1
%cmp.step.start = icmp ult ptr %src.step, %lower
%cmp.step.end = icmp uge ptr %src.step, %upper
%or.check = or i1 %cmp.step.start, %cmp.step.end
br i1 %or.check, label %trap.bb, label %exit
exit:
ret i4 3
}
define i4 @ptr_N_and_step_signed_positive_explicit_check_constant_step(ptr %src, ptr %lower, ptr %upper, i16 %N, i16 %step) {
; CHECK-LABEL: @ptr_N_and_step_signed_positive_explicit_check_constant_step(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[N_POS:%.*]] = icmp sge i16 [[N:%.*]], 0
; CHECK-NEXT: [[STEP_POS:%.*]] = icmp sge i16 [[STEP:%.*]], 0
; CHECK-NEXT: [[AND_1:%.*]] = and i1 [[N_POS]], [[STEP_POS]]
; CHECK-NEXT: br i1 [[AND_1]], label [[ENTRY_1:%.*]], label [[TRAP_BB:%.*]]
; CHECK: entry.1:
; CHECK-NEXT: [[SRC_END:%.*]] = getelementptr inbounds i8, ptr [[SRC:%.*]], i16 [[N]]
; CHECK-NEXT: [[CMP_SRC_START:%.*]] = icmp ult ptr [[SRC]], [[LOWER:%.*]]
; CHECK-NEXT: [[CMP_SRC_END:%.*]] = icmp uge ptr [[SRC_END]], [[UPPER:%.*]]
; CHECK-NEXT: [[OR_PRECOND_0:%.*]] = or i1 [[CMP_SRC_START]], [[CMP_SRC_END]]
; CHECK-NEXT: br i1 [[OR_PRECOND_0]], label [[TRAP_BB]], label [[STEP_CHECK:%.*]]
; CHECK: trap.bb:
; CHECK-NEXT: ret i4 2
; CHECK: step.check:
; CHECK-NEXT: [[STEP_UGE_0:%.*]] = icmp uge i16 [[STEP]], 0
; CHECK-NEXT: [[STEP_ULT_N:%.*]] = icmp ult i16 [[STEP]], [[N]]
; CHECK-NEXT: [[AND_2:%.*]] = and i1 true, [[STEP_ULT_N]]
; CHECK-NEXT: br i1 [[AND_2]], label [[PTR_CHECK:%.*]], label [[EXIT:%.*]]
; CHECK: ptr.check:
; CHECK-NEXT: [[SRC_STEP:%.*]] = getelementptr inbounds i8, ptr [[SRC]], i16 1
; CHECK-NEXT: [[CMP_STEP_START:%.*]] = icmp ult ptr [[SRC_STEP]], [[LOWER]]
; CHECK-NEXT: [[CMP_STEP_END:%.*]] = icmp uge ptr [[SRC_STEP]], [[UPPER]]
; CHECK-NEXT: [[OR_CHECK:%.*]] = or i1 false, false
; CHECK-NEXT: br i1 [[OR_CHECK]], label [[TRAP_BB]], label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: ret i4 3
;
entry:
%N.pos = icmp sge i16 %N, 0
%step.pos = icmp sge i16 %step, 0
%and.1 = and i1 %N.pos, %step.pos
br i1 %and.1, label %entry.1, label %trap.bb
entry.1:
%src.end = getelementptr inbounds i8, ptr %src, i16 %N
%cmp.src.start = icmp ult ptr %src, %lower
%cmp.src.end = icmp uge ptr %src.end, %upper
%or.precond.0 = or i1 %cmp.src.start, %cmp.src.end
br i1 %or.precond.0, label %trap.bb, label %step.check
trap.bb:
ret i4 2
step.check:
%step.uge.0 = icmp uge i16 %step, 0
%step.ult.N = icmp ult i16 %step, %N
%and.2 = and i1 %step.uge.0, %step.ult.N
br i1 %and.2, label %ptr.check, label %exit
ptr.check:
%src.step = getelementptr inbounds i8, ptr %src, i16 1
%cmp.step.start = icmp ult ptr %src.step, %lower
%cmp.step.end = icmp uge ptr %src.step, %upper
%or.check = or i1 %cmp.step.start, %cmp.step.end
br i1 %or.check, label %trap.bb, label %exit
exit:
ret i4 3
}
define i4 @ptr_N_and_step_signed_positive_unsigned_checks_only(ptr %src, ptr %lower, ptr %upper, i16 %N, i16 %step) {
; CHECK-LABEL: @ptr_N_and_step_signed_positive_unsigned_checks_only(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[SRC_END:%.*]] = getelementptr inbounds i8, ptr [[SRC:%.*]], i16 [[N:%.*]]
; CHECK-NEXT: [[NO_OVERFLOW:%.*]] = icmp ule ptr [[SRC]], [[SRC_END]]
; CHECK-NEXT: br i1 [[NO_OVERFLOW]], label [[ENTRY_1:%.*]], label [[TRAP_BB:%.*]]
; CHECK: entry.1:
; CHECK-NEXT: [[CMP_SRC_START:%.*]] = icmp ult ptr [[SRC]], [[LOWER:%.*]]
; CHECK-NEXT: [[CMP_SRC_END:%.*]] = icmp uge ptr [[SRC_END]], [[UPPER:%.*]]
; CHECK-NEXT: [[OR_PRECOND_0:%.*]] = or i1 [[CMP_SRC_START]], [[CMP_SRC_END]]
; CHECK-NEXT: br i1 [[OR_PRECOND_0]], label [[TRAP_BB]], label [[STEP_CHECK:%.*]]
; CHECK: trap.bb:
; CHECK-NEXT: ret i4 2
; CHECK: step.check:
; CHECK-NEXT: [[STEP_UGE_0:%.*]] = icmp uge i16 [[STEP:%.*]], 0
; CHECK-NEXT: [[STEP_ULT_N:%.*]] = icmp ult i16 [[STEP]], [[N]]
; CHECK-NEXT: [[AND_2:%.*]] = and i1 [[STEP_UGE_0]], [[STEP_ULT_N]]
; CHECK-NEXT: br i1 [[AND_2]], label [[PTR_CHECK:%.*]], label [[EXIT:%.*]]
; CHECK: ptr.check:
; CHECK-NEXT: [[SRC_STEP:%.*]] = getelementptr inbounds i8, ptr [[SRC]], i16 1
; CHECK-NEXT: [[CMP_STEP_START:%.*]] = icmp ult ptr [[SRC_STEP]], [[LOWER]]
; CHECK-NEXT: [[CMP_STEP_END:%.*]] = icmp uge ptr [[SRC_STEP]], [[UPPER]]
; CHECK-NEXT: [[OR_CHECK:%.*]] = or i1 false, [[CMP_STEP_END]]
; CHECK-NEXT: br i1 [[OR_CHECK]], label [[TRAP_BB]], label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: ret i4 3
;
entry:
%src.end = getelementptr inbounds i8, ptr %src, i16 %N
%no.overflow = icmp ule ptr %src, %src.end
br i1 %no.overflow, label %entry.1, label %trap.bb
entry.1:
%cmp.src.start = icmp ult ptr %src, %lower
%cmp.src.end = icmp uge ptr %src.end, %upper
%or.precond.0 = or i1 %cmp.src.start, %cmp.src.end
br i1 %or.precond.0, label %trap.bb, label %step.check
trap.bb:
ret i4 2
step.check:
%step.uge.0 = icmp uge i16 %step, 0
%step.ult.N = icmp ult i16 %step, %N
%and.2 = and i1 %step.uge.0, %step.ult.N
br i1 %and.2, label %ptr.check, label %exit
ptr.check:
%src.step = getelementptr inbounds i8, ptr %src, i16 1
%cmp.step.start = icmp ult ptr %src.step, %lower
%cmp.step.end = icmp uge ptr %src.step, %upper
%or.check = or i1 %cmp.step.start, %cmp.step.end
br i1 %or.check, label %trap.bb, label %exit
exit:
ret i4 3
}
define i4 @ptr_N_signed_positive(ptr %src, ptr %lower, ptr %upper, i16 %N, i16 %step) {
; CHECK-LABEL: @ptr_N_signed_positive(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[SRC_END:%.*]] = getelementptr inbounds i8, ptr [[SRC:%.*]], i16 [[N:%.*]]
; CHECK-NEXT: [[CMP_SRC_START:%.*]] = icmp ult ptr [[SRC]], [[LOWER:%.*]]
; CHECK-NEXT: [[CMP_SRC_END:%.*]] = icmp uge ptr [[SRC_END]], [[UPPER:%.*]]
; CHECK-NEXT: [[N_NEG:%.*]] = icmp slt i16 [[N]], 0
; CHECK-NEXT: [[OR_PRECOND_0:%.*]] = or i1 [[CMP_SRC_START]], [[CMP_SRC_END]]
; CHECK-NEXT: [[OR_PRECOND_1:%.*]] = or i1 [[OR_PRECOND_0]], [[N_NEG]]
; CHECK-NEXT: br i1 [[OR_PRECOND_1]], label [[TRAP_BB:%.*]], label [[STEP_CHECK:%.*]]
; CHECK: trap.bb:
; CHECK-NEXT: ret i4 2
; CHECK: step.check:
; CHECK-NEXT: [[STEP_POS:%.*]] = icmp uge i16 [[STEP:%.*]], 0
; CHECK-NEXT: [[STEP_ULT_N:%.*]] = icmp ult i16 [[STEP]], [[N]]
; CHECK-NEXT: [[AND_STEP:%.*]] = and i1 [[STEP_POS]], [[STEP_ULT_N]]
; CHECK-NEXT: br i1 [[AND_STEP]], label [[PTR_CHECK:%.*]], label [[EXIT:%.*]]
; CHECK: ptr.check:
; CHECK-NEXT: [[SRC_STEP:%.*]] = getelementptr inbounds i8, ptr [[SRC]], i16 [[STEP]]
; CHECK-NEXT: [[CMP_STEP_START:%.*]] = icmp ult ptr [[SRC_STEP]], [[LOWER]]
; CHECK-NEXT: [[CMP_STEP_END:%.*]] = icmp uge ptr [[SRC_STEP]], [[UPPER]]
; CHECK-NEXT: [[OR_CHECK:%.*]] = or i1 false, false
; CHECK-NEXT: br i1 [[OR_CHECK]], label [[TRAP_BB]], label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: ret i4 3
;
entry:
%src.end = getelementptr inbounds i8, ptr %src, i16 %N
%cmp.src.start = icmp ult ptr %src, %lower
%cmp.src.end = icmp uge ptr %src.end, %upper
%N.neg = icmp slt i16 %N, 0
%or.precond.0 = or i1 %cmp.src.start, %cmp.src.end
%or.precond.1 = or i1 %or.precond.0, %N.neg
br i1 %or.precond.1, label %trap.bb, label %step.check
trap.bb:
ret i4 2
step.check:
%step.pos = icmp uge i16 %step, 0
%step.ult.N = icmp ult i16 %step, %N
%and.step = and i1 %step.pos, %step.ult.N
br i1 %and.step, label %ptr.check, label %exit
ptr.check:
%src.step = getelementptr inbounds i8, ptr %src, i16 %step
%cmp.step.start = icmp ult ptr %src.step, %lower
%cmp.step.end = icmp uge ptr %src.step, %upper
%or.check = or i1 %cmp.step.start, %cmp.step.end
br i1 %or.check, label %trap.bb, label %exit
exit:
ret i4 3
}
define i4 @ptr_N_could_be_negative(ptr %src, ptr %lower, ptr %upper, i8 %N, i8 %step) {
; CHECK-LABEL: @ptr_N_could_be_negative(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[SRC_END:%.*]] = getelementptr inbounds i8, ptr [[SRC:%.*]], i8 [[N:%.*]]
; CHECK-NEXT: [[CMP_SRC_START:%.*]] = icmp ult ptr [[SRC]], [[LOWER:%.*]]
; CHECK-NEXT: [[CMP_SRC_END:%.*]] = icmp uge ptr [[SRC_END]], [[UPPER:%.*]]
; CHECK-NEXT: [[OR_PRECOND_0:%.*]] = or i1 [[CMP_SRC_START]], [[CMP_SRC_END]]
; CHECK-NEXT: br i1 [[OR_PRECOND_0]], label [[TRAP_BB:%.*]], label [[STEP_CHECK:%.*]]
; CHECK: trap.bb:
; CHECK-NEXT: ret i4 2
; CHECK: step.check:
; CHECK-NEXT: [[STEP_POS:%.*]] = icmp uge i8 [[STEP:%.*]], 0
; CHECK-NEXT: [[STEP_ULT_N:%.*]] = icmp ult i8 [[STEP]], [[N]]
; CHECK-NEXT: [[AND_STEP:%.*]] = and i1 [[STEP_POS]], [[STEP_ULT_N]]
; CHECK-NEXT: br i1 [[AND_STEP]], label [[PTR_CHECK:%.*]], label [[EXIT:%.*]]
; CHECK: ptr.check:
; CHECK-NEXT: [[SRC_STEP:%.*]] = getelementptr inbounds i8, ptr [[SRC]], i8 [[STEP]]
; CHECK-NEXT: [[CMP_STEP_START:%.*]] = icmp ult ptr [[SRC_STEP]], [[LOWER]]
; CHECK-NEXT: [[CMP_STEP_END:%.*]] = icmp uge ptr [[SRC_STEP]], [[UPPER]]
; CHECK-NEXT: [[OR_CHECK:%.*]] = or i1 [[CMP_STEP_START]], [[CMP_STEP_END]]
; CHECK-NEXT: br i1 [[OR_CHECK]], label [[TRAP_BB]], label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: ret i4 3
;
entry:
%src.end = getelementptr inbounds i8, ptr %src, i8 %N
%cmp.src.start = icmp ult ptr %src, %lower
%cmp.src.end = icmp uge ptr %src.end, %upper
%or.precond.0 = or i1 %cmp.src.start, %cmp.src.end
br i1 %or.precond.0, label %trap.bb, label %step.check
trap.bb:
ret i4 2
step.check:
%step.pos = icmp uge i8 %step, 0
%step.ult.N = icmp ult i8 %step, %N
%and.step = and i1 %step.pos, %step.ult.N
br i1 %and.step, label %ptr.check, label %exit
ptr.check:
%src.step = getelementptr inbounds i8, ptr %src, i8 %step
%cmp.step.start = icmp ult ptr %src.step, %lower
%cmp.step.end = icmp uge ptr %src.step, %upper
%or.check = or i1 %cmp.step.start, %cmp.step.end
br i1 %or.check, label %trap.bb, label %exit
exit:
ret i4 3
}
define i4 @ptr_src_uge_end(ptr %src, ptr %lower, ptr %upper, i8 %N, i8 %step) {
; CHECK-LABEL: @ptr_src_uge_end(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[SRC_END:%.*]] = getelementptr inbounds i8, ptr [[SRC:%.*]], i8 [[N:%.*]]
; CHECK-NEXT: [[CMP_SRC_START:%.*]] = icmp ult ptr [[SRC]], [[LOWER:%.*]]
; CHECK-NEXT: [[CMP_SRC_END:%.*]] = icmp uge ptr [[SRC_END]], [[UPPER:%.*]]
; CHECK-NEXT: [[CMP_OVERFLOW:%.*]] = icmp ugt ptr [[SRC]], [[SRC_END]]
; CHECK-NEXT: [[OR_PRECOND_0:%.*]] = or i1 [[CMP_SRC_START]], [[CMP_SRC_END]]
; CHECK-NEXT: [[OR_PRECOND_1:%.*]] = or i1 [[OR_PRECOND_0]], [[CMP_OVERFLOW]]
; CHECK-NEXT: br i1 [[OR_PRECOND_1]], label [[TRAP_BB:%.*]], label [[STEP_CHECK:%.*]]
; CHECK: trap.bb:
; CHECK-NEXT: ret i4 2
; CHECK: step.check:
; CHECK-NEXT: [[STEP_POS:%.*]] = icmp uge i8 [[STEP:%.*]], 0
; CHECK-NEXT: [[STEP_ULT_N:%.*]] = icmp ult i8 [[STEP]], [[N]]
; CHECK-NEXT: [[AND_STEP:%.*]] = and i1 [[STEP_POS]], [[STEP_ULT_N]]
; CHECK-NEXT: br i1 [[AND_STEP]], label [[PTR_CHECK:%.*]], label [[EXIT:%.*]]
; CHECK: ptr.check:
; CHECK-NEXT: [[SRC_STEP:%.*]] = getelementptr inbounds i8, ptr [[SRC]], i8 [[STEP]]
; CHECK-NEXT: [[CMP_STEP_START:%.*]] = icmp ult ptr [[SRC_STEP]], [[LOWER]]
; CHECK-NEXT: [[CMP_STEP_END:%.*]] = icmp uge ptr [[SRC_STEP]], [[UPPER]]
; CHECK-NEXT: [[OR_CHECK:%.*]] = or i1 [[CMP_STEP_START]], [[CMP_STEP_END]]
; CHECK-NEXT: br i1 [[OR_CHECK]], label [[TRAP_BB]], label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: ret i4 3
;
entry:
%src.end = getelementptr inbounds i8, ptr %src, i8 %N
%cmp.src.start = icmp ult ptr %src, %lower
%cmp.src.end = icmp uge ptr %src.end, %upper
%cmp.overflow = icmp ugt ptr %src, %src.end
%or.precond.0 = or i1 %cmp.src.start, %cmp.src.end
%or.precond.1 = or i1 %or.precond.0, %cmp.overflow
br i1 %or.precond.1, label %trap.bb, label %step.check
trap.bb:
ret i4 2
step.check:
%step.pos = icmp uge i8 %step, 0
%step.ult.N = icmp ult i8 %step, %N
%and.step = and i1 %step.pos, %step.ult.N
br i1 %and.step, label %ptr.check, label %exit
ptr.check:
%src.step = getelementptr inbounds i8, ptr %src, i8 %step
%cmp.step.start = icmp ult ptr %src.step, %lower
%cmp.step.end = icmp uge ptr %src.step, %upper
%or.check = or i1 %cmp.step.start, %cmp.step.end
br i1 %or.check, label %trap.bb, label %exit
exit:
ret i4 3
}
; N might be negative, meaning %src.end could be < %src! Cannot remove checks!
define i4 @ptr_N_unsigned_positive(ptr %src, ptr %lower, ptr %upper, i16 %N, i16 %step) {
; CHECK-LABEL: @ptr_N_unsigned_positive(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[SRC_END:%.*]] = getelementptr inbounds i8, ptr [[SRC:%.*]], i16 [[N:%.*]]
; CHECK-NEXT: [[CMP_SRC_START:%.*]] = icmp ult ptr [[SRC]], [[LOWER:%.*]]
; CHECK-NEXT: [[CMP_SRC_END:%.*]] = icmp uge ptr [[SRC_END]], [[UPPER:%.*]]
; CHECK-NEXT: [[N_NEG:%.*]] = icmp ult i16 [[N]], 0
; CHECK-NEXT: [[OR_PRECOND_0:%.*]] = or i1 [[CMP_SRC_START]], [[CMP_SRC_END]]
; CHECK-NEXT: [[OR_PRECOND_1:%.*]] = or i1 [[OR_PRECOND_0]], [[N_NEG]]
; CHECK-NEXT: br i1 [[OR_PRECOND_1]], label [[TRAP_BB:%.*]], label [[STEP_CHECK:%.*]]
; CHECK: trap.bb:
; CHECK-NEXT: ret i4 2
; CHECK: step.check:
; CHECK-NEXT: [[STEP_POS:%.*]] = icmp uge i16 [[STEP:%.*]], 0
; CHECK-NEXT: [[STEP_ULT_N:%.*]] = icmp ult i16 [[STEP]], [[N]]
; CHECK-NEXT: [[AND_STEP:%.*]] = and i1 [[STEP_POS]], [[STEP_ULT_N]]
; CHECK-NEXT: br i1 [[AND_STEP]], label [[PTR_CHECK:%.*]], label [[EXIT:%.*]]
; CHECK: ptr.check:
; CHECK-NEXT: [[SRC_STEP:%.*]] = getelementptr inbounds i8, ptr [[SRC]], i16 [[STEP]]
; CHECK-NEXT: [[CMP_STEP_START:%.*]] = icmp ult ptr [[SRC_STEP]], [[LOWER]]
; CHECK-NEXT: [[CMP_STEP_END:%.*]] = icmp uge ptr [[SRC_STEP]], [[UPPER]]
; CHECK-NEXT: [[OR_CHECK:%.*]] = or i1 [[CMP_STEP_START]], [[CMP_STEP_END]]
; CHECK-NEXT: br i1 [[OR_CHECK]], label [[TRAP_BB]], label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: ret i4 3
;
entry:
%src.end = getelementptr inbounds i8, ptr %src, i16 %N
%cmp.src.start = icmp ult ptr %src, %lower
%cmp.src.end = icmp uge ptr %src.end, %upper
%N.neg = icmp ult i16 %N, 0
%or.precond.0 = or i1 %cmp.src.start, %cmp.src.end
%or.precond.1 = or i1 %or.precond.0, %N.neg
br i1 %or.precond.1, label %trap.bb, label %step.check
trap.bb:
ret i4 2
step.check:
%step.pos = icmp uge i16 %step, 0
%step.ult.N = icmp ult i16 %step, %N
%and.step = and i1 %step.pos, %step.ult.N
br i1 %and.step, label %ptr.check, label %exit
ptr.check:
%src.step = getelementptr inbounds i8, ptr %src, i16 %step
%cmp.step.start = icmp ult ptr %src.step, %lower
%cmp.step.end = icmp uge ptr %src.step, %upper
%or.check = or i1 %cmp.step.start, %cmp.step.end
br i1 %or.check, label %trap.bb, label %exit
exit:
ret i4 3
}
define i4 @ptr_N_signed_positive_assume(ptr %src, ptr %lower, ptr %upper, i16 %N, i16 %step) {
; CHECK-LABEL: @ptr_N_signed_positive_assume(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[SRC_END:%.*]] = getelementptr inbounds i8, ptr [[SRC:%.*]], i16 [[N:%.*]]
; CHECK-NEXT: [[CMP_SRC_START:%.*]] = icmp ult ptr [[SRC]], [[LOWER:%.*]]
; CHECK-NEXT: [[CMP_SRC_END:%.*]] = icmp uge ptr [[SRC_END]], [[UPPER:%.*]]
; CHECK-NEXT: [[N_NEG:%.*]] = icmp slt i16 [[N]], 0
; CHECK-NEXT: call void @llvm.assume(i1 [[N_NEG]])
; CHECK-NEXT: [[OR_PRECOND_0:%.*]] = or i1 [[CMP_SRC_START]], [[CMP_SRC_END]]
; CHECK-NEXT: br i1 [[OR_PRECOND_0]], label [[TRAP_BB:%.*]], label [[STEP_CHECK:%.*]]
; CHECK: trap.bb:
; CHECK-NEXT: ret i4 2
; CHECK: step.check:
; CHECK-NEXT: [[STEP_POS:%.*]] = icmp uge i16 [[STEP:%.*]], 0
; CHECK-NEXT: [[STEP_ULT_N:%.*]] = icmp ult i16 [[STEP]], [[N]]
; CHECK-NEXT: [[AND_STEP:%.*]] = and i1 [[STEP_POS]], [[STEP_ULT_N]]
; CHECK-NEXT: br i1 [[AND_STEP]], label [[PTR_CHECK:%.*]], label [[EXIT:%.*]]
; CHECK: ptr.check:
; CHECK-NEXT: [[SRC_STEP:%.*]] = getelementptr inbounds i8, ptr [[SRC]], i16 [[STEP]]
; CHECK-NEXT: [[CMP_STEP_START:%.*]] = icmp ult ptr [[SRC_STEP]], [[LOWER]]
; CHECK-NEXT: [[CMP_STEP_END:%.*]] = icmp uge ptr [[SRC_STEP]], [[UPPER]]
; CHECK-NEXT: [[OR_CHECK:%.*]] = or i1 [[CMP_STEP_START]], [[CMP_STEP_END]]
; CHECK-NEXT: br i1 [[OR_CHECK]], label [[TRAP_BB]], label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: ret i4 3
;
entry:
%src.end = getelementptr inbounds i8, ptr %src, i16 %N
%cmp.src.start = icmp ult ptr %src, %lower
%cmp.src.end = icmp uge ptr %src.end, %upper
%N.neg = icmp slt i16 %N, 0
call void @llvm.assume(i1 %N.neg)
%or.precond.0 = or i1 %cmp.src.start, %cmp.src.end
br i1 %or.precond.0, label %trap.bb, label %step.check
trap.bb:
ret i4 2
step.check:
%step.pos = icmp uge i16 %step, 0
%step.ult.N = icmp ult i16 %step, %N
%and.step = and i1 %step.pos, %step.ult.N
br i1 %and.step, label %ptr.check, label %exit
ptr.check:
%src.step = getelementptr inbounds i8, ptr %src, i16 %step
%cmp.step.start = icmp ult ptr %src.step, %lower
%cmp.step.end = icmp uge ptr %src.step, %upper
%or.check = or i1 %cmp.step.start, %cmp.step.end
br i1 %or.check, label %trap.bb, label %exit
exit:
ret i4 3
}
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