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clang-p2996/llvm/test/Transforms/InstCombine/opaque-ptr.ll
Nikita Popov d01237c45b [InstCombine] Make indexed compare fold GEP source type independent (#71663) 
The indexed compare fold converts comparisons of GEPs with same
(indirect) base into comparisons of offset. Currently, it only supports
GEPs with the same source element type.

This change makes the transform operate on offsets instead, which
removes the type dependence. To keep closer to the scope of the original
implementation, this keeps the limitation that we should only have at
most one variable index per GEP.

This addresses the main regression from
https://github.com/llvm/llvm-project/pull/68882.

TBH I have some doubts that this is really a useful transform (at least
for the case where there are extra pointer users, so we have to
rematerialize pointers at some point). I can only assume it exists for a
reason...
2023-11-28 09:16:04 +01:00

696 lines
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=instcombine < %s | FileCheck %s
define ptr @bitcast_opaque_to_opaque(ptr %a) {
; CHECK-LABEL: @bitcast_opaque_to_opaque(
; CHECK-NEXT: ret ptr [[A:%.*]]
;
ret ptr %a
}
define ptr @bitcast_typed_to_opaque(ptr %a) {
; CHECK-LABEL: @bitcast_typed_to_opaque(
; CHECK-NEXT: ret ptr [[A:%.*]]
;
ret ptr %a
}
define ptr @bitcast_opaque_to_typed(ptr %a) {
; CHECK-LABEL: @bitcast_opaque_to_typed(
; CHECK-NEXT: ret ptr [[A:%.*]]
;
ret ptr %a
}
@g = global i8 0
define ptr @bitcast_typed_to_opaque_constexpr() {
; CHECK-LABEL: @bitcast_typed_to_opaque_constexpr(
; CHECK-NEXT: ret ptr @g
;
ret ptr @g
}
define ptr @addrspacecast_opaque_to_opaque(ptr addrspace(1) %a) {
; CHECK-LABEL: @addrspacecast_opaque_to_opaque(
; CHECK-NEXT: [[B:%.*]] = addrspacecast ptr addrspace(1) [[A:%.*]] to ptr
; CHECK-NEXT: ret ptr [[B]]
;
%b = addrspacecast ptr addrspace(1) %a to ptr
ret ptr %b
}
define ptr @addrspacecast_typed_to_opaque(ptr addrspace(1) %a) {
; CHECK-LABEL: @addrspacecast_typed_to_opaque(
; CHECK-NEXT: [[B:%.*]] = addrspacecast ptr addrspace(1) [[A:%.*]] to ptr
; CHECK-NEXT: ret ptr [[B]]
;
%b = addrspacecast ptr addrspace(1) %a to ptr
ret ptr %b
}
define ptr @addrspacecast_opaque_to_typed(ptr addrspace(1) %a) {
; CHECK-LABEL: @addrspacecast_opaque_to_typed(
; CHECK-NEXT: [[B:%.*]] = addrspacecast ptr addrspace(1) [[A:%.*]] to ptr
; CHECK-NEXT: ret ptr [[B]]
;
%b = addrspacecast ptr addrspace(1) %a to ptr
ret ptr %b
}
define ptr addrspace(1) @bitcast_and_addrspacecast_eliminable(ptr %a) {
; CHECK-LABEL: @bitcast_and_addrspacecast_eliminable(
; CHECK-NEXT: [[C:%.*]] = addrspacecast ptr [[A:%.*]] to ptr addrspace(1)
; CHECK-NEXT: ret ptr addrspace(1) [[C]]
;
%c = addrspacecast ptr %a to ptr addrspace(1)
ret ptr addrspace(1) %c
}
define ptr addrspace(1) @addrspacecast_typed_to_opaque_constexpr() {
; CHECK-LABEL: @addrspacecast_typed_to_opaque_constexpr(
; CHECK-NEXT: ret ptr addrspace(1) addrspacecast (ptr @g to ptr addrspace(1))
;
ret ptr addrspace(1) addrspacecast (ptr @g to ptr addrspace(1))
}
define ptr @gep_constexpr_1(ptr %a) {
; CHECK-LABEL: @gep_constexpr_1(
; CHECK-NEXT: ret ptr inttoptr (i64 6 to ptr)
;
ret ptr getelementptr (i16, ptr null, i32 3)
}
define ptr @gep_constexpr_2(ptr %a) {
; CHECK-LABEL: @gep_constexpr_2(
; CHECK-NEXT: ret ptr getelementptr (i8, ptr @g, i64 3)
;
ret ptr getelementptr (i8, ptr @g, i32 3)
}
define ptr addrspace(1) @gep_constexpr_3(ptr %a) {
; CHECK-LABEL: @gep_constexpr_3(
; CHECK-NEXT: ret ptr addrspace(1) getelementptr (i8, ptr addrspace(1) addrspacecast (ptr @g to ptr addrspace(1)), i64 3)
;
ret ptr addrspace(1) getelementptr ([0 x i8], ptr addrspace(1) addrspacecast (ptr @g to ptr addrspace(1)), i64 0, i32 3)
}
define ptr @load_bitcast_1(ptr %a) {
; CHECK-LABEL: @load_bitcast_1(
; CHECK-NEXT: [[B:%.*]] = load ptr, ptr [[A:%.*]], align 8
; CHECK-NEXT: ret ptr [[B]]
;
%b = load ptr, ptr %a
ret ptr %b
}
define ptr @load_bitcast_2(ptr %a) {
; CHECK-LABEL: @load_bitcast_2(
; CHECK-NEXT: [[C:%.*]] = load ptr, ptr [[A:%.*]], align 8
; CHECK-NEXT: ret ptr [[C]]
;
%c = load ptr, ptr %a
ret ptr %c
}
define void @call(ptr %a) {
; CHECK-LABEL: @call(
; CHECK-NEXT: call void [[A:%.*]]()
; CHECK-NEXT: ret void
;
call void %a()
ret void
}
declare void @varargs(...)
define void @varargs_cast_typed_to_opaque_same_type(ptr %a) {
; CHECK-LABEL: @varargs_cast_typed_to_opaque_same_type(
; CHECK-NEXT: call void (...) @varargs(ptr byval(i32) [[A:%.*]])
; CHECK-NEXT: ret void
;
call void (...) @varargs(ptr byval(i32) %a)
ret void
}
define void @varargs_cast_typed_to_opaque_different_type(ptr %a) {
; CHECK-LABEL: @varargs_cast_typed_to_opaque_different_type(
; CHECK-NEXT: call void (...) @varargs(ptr byval(float) [[A:%.*]])
; CHECK-NEXT: ret void
;
call void (...) @varargs(ptr byval(float) %a)
ret void
}
define void @varargs_cast_typed_to_opaque_different_size(ptr %a) {
; CHECK-LABEL: @varargs_cast_typed_to_opaque_different_size(
; CHECK-NEXT: call void (...) @varargs(ptr byval(i64) [[A:%.*]])
; CHECK-NEXT: ret void
;
call void (...) @varargs(ptr byval(i64) %a)
ret void
}
define void @varargs_cast_opaque_to_typed(ptr %a) {
; CHECK-LABEL: @varargs_cast_opaque_to_typed(
; CHECK-NEXT: call void (...) @varargs(ptr byval(i8) [[A:%.*]])
; CHECK-NEXT: ret void
;
call void (...) @varargs(ptr byval(i8) %a)
ret void
}
define ptr @geps_combinable(ptr %a) {
; CHECK-LABEL: @geps_combinable(
; CHECK-NEXT: [[A3:%.*]] = getelementptr { i32, { i32, i32 } }, ptr [[A:%.*]], i64 0, i32 1, i32 1
; CHECK-NEXT: ret ptr [[A3]]
;
%a2 = getelementptr { i32, { i32, i32 } }, ptr %a, i32 0, i32 1
%a3 = getelementptr { i32, i32 }, ptr %a2, i32 0, i32 1
ret ptr %a3
}
define ptr @geps_combinable_different_elem_type1(ptr %a) {
; CHECK-LABEL: @geps_combinable_different_elem_type1(
; CHECK-NEXT: [[A3:%.*]] = getelementptr { i32, i32 }, ptr [[A:%.*]], i64 1
; CHECK-NEXT: ret ptr [[A3]]
;
%a2 = getelementptr { i32, i32 }, ptr %a, i32 0, i32 1
%a3 = getelementptr { i32, i32 }, ptr %a2, i32 0, i32 1
ret ptr %a3
}
define ptr @geps_combinable_different_elem_type2(ptr %a) {
; CHECK-LABEL: @geps_combinable_different_elem_type2(
; CHECK-NEXT: [[A3:%.*]] = getelementptr { i32, i32 }, ptr [[A:%.*]], i64 1
; CHECK-NEXT: ret ptr [[A3]]
;
%a2 = getelementptr { i32, i32 }, ptr %a, i32 0, i32 1
%a3 = getelementptr i8, ptr %a2, i64 4
ret ptr %a3
}
define ptr @geps_combinable_different_elem_type3(ptr %a) {
; CHECK-LABEL: @geps_combinable_different_elem_type3(
; CHECK-NEXT: [[A3:%.*]] = getelementptr { i32, i32 }, ptr [[A:%.*]], i64 1, i32 1
; CHECK-NEXT: ret ptr [[A3]]
;
%a2 = getelementptr { i32, i32 }, ptr %a, i32 0, i32 1
%a3 = getelementptr i8, ptr %a2, i64 8
ret ptr %a3
}
define ptr @geps_combinable_different_elem_type4(ptr %a) {
; CHECK-LABEL: @geps_combinable_different_elem_type4(
; CHECK-NEXT: [[A3:%.*]] = getelementptr i8, ptr [[A:%.*]], i64 14
; CHECK-NEXT: ret ptr [[A3]]
;
%a2 = getelementptr { i32, i32 }, ptr %a, i32 0, i32 1
%a3 = getelementptr i8, ptr %a2, i64 10
ret ptr %a3
}
define ptr @geps_combinable_different_elem_type5(ptr %a) {
; CHECK-LABEL: @geps_combinable_different_elem_type5(
; CHECK-NEXT: ret ptr [[A:%.*]]
;
%a2 = getelementptr { i32, i32 }, ptr %a, i32 0, i32 1
%a3 = getelementptr i8, ptr %a2, i64 -4
ret ptr %a3
}
define ptr @geps_combinable_different_elem_type6(ptr %a, i64 %idx) {
; CHECK-LABEL: @geps_combinable_different_elem_type6(
; CHECK-NEXT: [[A3:%.*]] = getelementptr { i32, i32 }, ptr [[A:%.*]], i64 [[IDX:%.*]], i32 1
; CHECK-NEXT: ret ptr [[A3]]
;
%a2 = getelementptr { i32, i32 }, ptr %a, i64 %idx
%a3 = getelementptr i8, ptr %a2, i64 4
ret ptr %a3
}
define ptr @geps_combinable_different_elem_type7(ptr %a, i64 %idx) {
; CHECK-LABEL: @geps_combinable_different_elem_type7(
; CHECK-NEXT: [[A2:%.*]] = getelementptr { i32, i32 }, ptr [[A:%.*]], i64 [[IDX:%.*]], i32 1
; CHECK-NEXT: [[A3:%.*]] = getelementptr i8, ptr [[A2]], i64 4
; CHECK-NEXT: ret ptr [[A3]]
;
%a2 = getelementptr { i32, i32 }, ptr %a, i64 %idx, i32 1
%a3 = getelementptr i8, ptr %a2, i64 4
ret ptr %a3
}
define ptr @geps_combinable_different_elem_type8(ptr %a, i64 %idx) {
; CHECK-LABEL: @geps_combinable_different_elem_type8(
; CHECK-NEXT: [[A2:%.*]] = getelementptr inbounds { { i32, i32 } }, ptr [[A:%.*]], i64 [[IDX:%.*]], i32 0, i32 1
; CHECK-NEXT: [[A3:%.*]] = getelementptr inbounds i8, ptr [[A2]], i64 4
; CHECK-NEXT: ret ptr [[A3]]
;
%a2 = getelementptr inbounds { { i32, i32 } }, ptr %a, i64 %idx, i32 0, i32 1
%a3 = getelementptr inbounds i8, ptr %a2, i32 4
ret ptr %a3
}
define ptr @geps_combinable_different_elem_type9(ptr %a, i64 %idx) {
; CHECK-LABEL: @geps_combinable_different_elem_type9(
; CHECK-NEXT: [[A3:%.*]] = getelementptr inbounds { { i32, i32 } }, ptr [[A:%.*]], i64 [[IDX:%.*]]
; CHECK-NEXT: ret ptr [[A3]]
;
%a2 = getelementptr inbounds { { i32, i32 } }, ptr %a, i64 %idx, i32 0, i32 1
%a3 = getelementptr inbounds i8, ptr %a2, i32 -4
ret ptr %a3
}
declare void @use(ptr)
define ptr @geps_combinable_different_elem_type_extra_use1(ptr %a) {
; CHECK-LABEL: @geps_combinable_different_elem_type_extra_use1(
; CHECK-NEXT: [[A2:%.*]] = getelementptr { i32, i32 }, ptr [[A:%.*]], i64 0, i32 1
; CHECK-NEXT: call void @use(ptr [[A2]])
; CHECK-NEXT: [[A3:%.*]] = getelementptr { i32, i32 }, ptr [[A]], i64 1
; CHECK-NEXT: ret ptr [[A3]]
;
%a2 = getelementptr { i32, i32 }, ptr %a, i32 0, i32 1
call void @use(ptr %a2)
%a3 = getelementptr i8, ptr %a2, i64 4
ret ptr %a3
}
define ptr @geps_combinable_different_elem_type_extra_use2(ptr %a, i64 %idx) {
; CHECK-LABEL: @geps_combinable_different_elem_type_extra_use2(
; CHECK-NEXT: [[A2:%.*]] = getelementptr { i32, i32 }, ptr [[A:%.*]], i64 [[IDX:%.*]]
; CHECK-NEXT: call void @use(ptr [[A2]])
; CHECK-NEXT: [[A3:%.*]] = getelementptr i8, ptr [[A2]], i64 4
; CHECK-NEXT: ret ptr [[A3]]
;
%a2 = getelementptr { i32, i32 }, ptr %a, i64 %idx
call void @use(ptr %a2)
%a3 = getelementptr i8, ptr %a2, i64 4
ret ptr %a3
}
define ptr @geps_combinable_scalable(ptr %a, i64 %idx) {
; CHECK-LABEL: @geps_combinable_scalable(
; CHECK-NEXT: [[A2:%.*]] = getelementptr inbounds <vscale x 2 x i32>, ptr [[A:%.*]], i64 1
; CHECK-NEXT: [[A3:%.*]] = getelementptr inbounds i8, ptr [[A2]], i64 4
; CHECK-NEXT: ret ptr [[A3]]
;
%a2 = getelementptr inbounds <vscale x 2 x i32>, ptr %a, i64 1
%a3 = getelementptr inbounds i8, ptr %a2, i32 4
ret ptr %a3
}
define ptr @geps_combinable_scalable_vector_array(ptr %a, i64 %idx) {
; CHECK-LABEL: @geps_combinable_scalable_vector_array(
; CHECK-NEXT: [[A2:%.*]] = getelementptr inbounds [4 x <vscale x 2 x i32>], ptr [[A:%.*]], i64 1
; CHECK-NEXT: [[A3:%.*]] = getelementptr inbounds i8, ptr [[A2]], i64 4
; CHECK-NEXT: ret ptr [[A3]]
;
%a2 = getelementptr inbounds [4 x <vscale x 2 x i32>], ptr %a, i64 1
%a3 = getelementptr inbounds i8, ptr %a2, i32 4
ret ptr %a3
}
define i1 @compare_geps_same_indices(ptr %a, ptr %b, i64 %idx) {
; CHECK-LABEL: @compare_geps_same_indices(
; CHECK-NEXT: [[C:%.*]] = icmp eq ptr [[A:%.*]], [[B:%.*]]
; CHECK-NEXT: ret i1 [[C]]
;
%a2 = getelementptr i32, ptr %a, i64 %idx
%b2 = getelementptr i32, ptr %b, i64 %idx
%c = icmp eq ptr %a2, %b2
ret i1 %c
}
define i1 @compare_geps_same_indices_different_types(ptr %a, ptr %b, i64 %idx) {
; CHECK-LABEL: @compare_geps_same_indices_different_types(
; CHECK-NEXT: [[A2:%.*]] = getelementptr i32, ptr [[A:%.*]], i64 [[IDX:%.*]]
; CHECK-NEXT: [[B2:%.*]] = getelementptr i64, ptr [[B:%.*]], i64 [[IDX]]
; CHECK-NEXT: [[C:%.*]] = icmp eq ptr [[A2]], [[B2]]
; CHECK-NEXT: ret i1 [[C]]
;
%a2 = getelementptr i32, ptr %a, i64 %idx
%b2 = getelementptr i64, ptr %b, i64 %idx
%c = icmp eq ptr %a2, %b2
ret i1 %c
}
define i1 @compare_gep_with_base(ptr %p, i64 %idx) {
; CHECK-LABEL: @compare_gep_with_base(
; CHECK-NEXT: [[C:%.*]] = icmp eq i64 [[IDX:%.*]], 0
; CHECK-NEXT: ret i1 [[C]]
;
%gep = getelementptr inbounds i32, ptr %p, i64 %idx
%c = icmp eq ptr %gep, %p
ret i1 %c
}
define <2 x i1> @compare_gep_with_base_vector1(<2 x ptr> %p, i64 %idx) {
; CHECK-LABEL: @compare_gep_with_base_vector1(
; CHECK-NEXT: [[DOTSPLATINSERT:%.*]] = insertelement <2 x i64> poison, i64 [[IDX:%.*]], i64 0
; CHECK-NEXT: [[TMP1:%.*]] = shl <2 x i64> [[DOTSPLATINSERT]], <i64 2, i64 0>
; CHECK-NEXT: [[TMP2:%.*]] = icmp eq <2 x i64> [[TMP1]], zeroinitializer
; CHECK-NEXT: [[C:%.*]] = shufflevector <2 x i1> [[TMP2]], <2 x i1> poison, <2 x i32> zeroinitializer
; CHECK-NEXT: ret <2 x i1> [[C]]
;
%gep = getelementptr inbounds i32, <2 x ptr> %p, i64 %idx
%c = icmp eq <2 x ptr> %gep, %p
ret <2 x i1> %c
}
define <2 x i1> @compare_gep_with_base_vector2(<2 x ptr> %p, <2 x i64> %idx) {
; CHECK-LABEL: @compare_gep_with_base_vector2(
; CHECK-NEXT: [[C:%.*]] = icmp eq <2 x i64> [[IDX:%.*]], zeroinitializer
; CHECK-NEXT: ret <2 x i1> [[C]]
;
%gep = getelementptr inbounds i32, <2 x ptr> %p, <2 x i64> %idx
%c = icmp eq <2 x ptr> %gep, %p
ret <2 x i1> %c
}
define <4 x i1> @compare_geps_same_indices_scalar_vector_base_mismatch(ptr %ptr, <4 x ptr> %ptrs) {
; CHECK-LABEL: @compare_geps_same_indices_scalar_vector_base_mismatch(
; CHECK-NEXT: [[GEP1:%.*]] = getelementptr i16, <4 x ptr> [[PTRS:%.*]], <4 x i64> <i64 1, i64 2, i64 3, i64 4>
; CHECK-NEXT: [[GEP2:%.*]] = getelementptr i16, ptr [[PTR:%.*]], <4 x i64> <i64 1, i64 2, i64 3, i64 4>
; CHECK-NEXT: [[CMP:%.*]] = icmp eq <4 x ptr> [[GEP1]], [[GEP2]]
; CHECK-NEXT: ret <4 x i1> [[CMP]]
;
%gep1 = getelementptr i16, <4 x ptr> %ptrs, <4 x i64> <i64 1, i64 2, i64 3, i64 4>
%gep2 = getelementptr i16, ptr %ptr, <4 x i64> <i64 1, i64 2, i64 3, i64 4>
%cmp = icmp eq <4 x ptr> %gep1, %gep2
ret <4 x i1> %cmp
}
define ptr @indexed_compare(ptr %A, i64 %offset) {
; CHECK-LABEL: @indexed_compare(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP_IDX:%.*]] = shl nsw i64 [[OFFSET:%.*]], 2
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: [[RHS_IDX:%.*]] = phi i64 [ [[RHS_ADD:%.*]], [[BB]] ], [ [[TMP_IDX]], [[ENTRY:%.*]] ]
; CHECK-NEXT: [[RHS_ADD]] = add nsw i64 [[RHS_IDX]], 4
; CHECK-NEXT: [[COND:%.*]] = icmp sgt i64 [[RHS_IDX]], 400
; CHECK-NEXT: br i1 [[COND]], label [[BB2:%.*]], label [[BB]]
; CHECK: bb2:
; CHECK-NEXT: [[RHS_PTR:%.*]] = getelementptr inbounds i8, ptr [[A:%.*]], i64 [[RHS_IDX]]
; CHECK-NEXT: ret ptr [[RHS_PTR]]
;
entry:
%tmp = getelementptr inbounds i32, ptr %A, i64 %offset
br label %bb
bb:
%RHS = phi ptr [ %RHS.next, %bb ], [ %tmp, %entry ]
%LHS = getelementptr inbounds i32, ptr %A, i32 100
%RHS.next = getelementptr inbounds i32, ptr %RHS, i64 1
%cond = icmp ult ptr %LHS, %RHS
br i1 %cond, label %bb2, label %bb
bb2:
ret ptr %RHS
}
define ptr @indexed_compare_different_types(ptr %A, i64 %offset) {
; CHECK-LABEL: @indexed_compare_different_types(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP_IDX:%.*]] = shl nsw i64 [[OFFSET:%.*]], 2
; CHECK-NEXT: br label [[BB:%.*]]
; CHECK: bb:
; CHECK-NEXT: [[RHS_IDX:%.*]] = phi i64 [ [[RHS_ADD:%.*]], [[BB]] ], [ [[TMP_IDX]], [[ENTRY:%.*]] ]
; CHECK-NEXT: [[RHS_ADD]] = add nsw i64 [[RHS_IDX]], 4
; CHECK-NEXT: [[COND:%.*]] = icmp sgt i64 [[RHS_IDX]], 800
; CHECK-NEXT: br i1 [[COND]], label [[BB2:%.*]], label [[BB]]
; CHECK: bb2:
; CHECK-NEXT: [[RHS_PTR:%.*]] = getelementptr inbounds i8, ptr [[A:%.*]], i64 [[RHS_IDX]]
; CHECK-NEXT: ret ptr [[RHS_PTR]]
;
entry:
%tmp = getelementptr inbounds i32, ptr %A, i64 %offset
br label %bb
bb:
%RHS = phi ptr [ %RHS.next, %bb ], [ %tmp, %entry ]
%LHS = getelementptr inbounds i64, ptr %A, i32 100
%RHS.next = getelementptr inbounds i32, ptr %RHS, i64 1
%cond = icmp ult ptr %LHS, %RHS
br i1 %cond, label %bb2, label %bb
bb2:
ret ptr %RHS
}
define ptr addrspace(1) @gep_of_addrspace_cast(ptr %ptr) {
; CHECK-LABEL: @gep_of_addrspace_cast(
; CHECK-NEXT: [[CAST1:%.*]] = addrspacecast ptr [[PTR:%.*]] to ptr addrspace(1)
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i32, ptr addrspace(1) [[CAST1]], i64 1
; CHECK-NEXT: ret ptr addrspace(1) [[GEP]]
;
%cast1 = addrspacecast ptr %ptr to ptr addrspace(1)
%gep = getelementptr inbounds i32, ptr addrspace(1) %cast1, i64 1
ret ptr addrspace(1) %gep
}
define i1 @cmp_gep_same_base_same_type(ptr %ptr, i64 %idx1, i64 %idx2) {
; CHECK-LABEL: @cmp_gep_same_base_same_type(
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i64 [[IDX1:%.*]], [[IDX2:%.*]]
; CHECK-NEXT: ret i1 [[CMP]]
;
%gep1 = getelementptr inbounds i32, ptr %ptr, i64 %idx1
%gep2 = getelementptr inbounds i32, ptr %ptr, i64 %idx2
%cmp = icmp ult ptr %gep1, %gep2
ret i1 %cmp
}
define i1 @cmp_gep_same_base_different_type(ptr %ptr, i64 %idx1, i64 %idx2) {
; CHECK-LABEL: @cmp_gep_same_base_different_type(
; CHECK-NEXT: [[GEP1_IDX:%.*]] = shl nsw i64 [[IDX1:%.*]], 2
; CHECK-NEXT: [[GEP2_IDX:%.*]] = shl nsw i64 [[IDX2:%.*]], 3
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i64 [[GEP1_IDX]], [[GEP2_IDX]]
; CHECK-NEXT: ret i1 [[CMP]]
;
%gep1 = getelementptr inbounds i32, ptr %ptr, i64 %idx1
%gep2 = getelementptr inbounds i64, ptr %ptr, i64 %idx2
%cmp = icmp ult ptr %gep1, %gep2
ret i1 %cmp
}
@ary = constant [4 x i8] [i8 1, i8 2, i8 3, i8 4]
define i1 @cmp_load_gep_global(i64 %idx) {
; CHECK-LABEL: @cmp_load_gep_global(
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i64 [[IDX:%.*]], 2
; CHECK-NEXT: ret i1 [[CMP]]
;
%gep = getelementptr [4 x i8], ptr @ary, i64 0, i64 %idx
%load = load i8, ptr %gep
%cmp = icmp eq i8 %load, 3
ret i1 %cmp
}
define i1 @cmp_load_gep_global_different_load_type(i64 %idx) {
; CHECK-LABEL: @cmp_load_gep_global_different_load_type(
; CHECK-NEXT: [[GEP:%.*]] = getelementptr [4 x i8], ptr @ary, i64 0, i64 [[IDX:%.*]]
; CHECK-NEXT: [[LOAD:%.*]] = load i16, ptr [[GEP]], align 2
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i16 [[LOAD]], 3
; CHECK-NEXT: ret i1 [[CMP]]
;
%gep = getelementptr [4 x i8], ptr @ary, i64 0, i64 %idx
%load = load i16, ptr %gep
%cmp = icmp eq i16 %load, 3
ret i1 %cmp
}
define i1 @cmp_load_gep_global_different_gep_type(i64 %idx) {
; CHECK-LABEL: @cmp_load_gep_global_different_gep_type(
; CHECK-NEXT: [[GEP:%.*]] = getelementptr [4 x i16], ptr @ary, i64 0, i64 [[IDX:%.*]]
; CHECK-NEXT: [[LOAD:%.*]] = load i16, ptr [[GEP]], align 2
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i16 [[LOAD]], 3
; CHECK-NEXT: ret i1 [[CMP]]
;
%gep = getelementptr [4 x i16], ptr @ary, i64 0, i64 %idx
%load = load i16, ptr %gep
%cmp = icmp eq i16 %load, 3
ret i1 %cmp
}
define ptr @phi_of_gep(i1 %c, ptr %p) {
; CHECK-LABEL: @phi_of_gep(
; CHECK-NEXT: br i1 [[C:%.*]], label [[IF:%.*]], label [[ELSE:%.*]]
; CHECK: if:
; CHECK-NEXT: br label [[JOIN:%.*]]
; CHECK: else:
; CHECK-NEXT: br label [[JOIN]]
; CHECK: join:
; CHECK-NEXT: [[PHI:%.*]] = getelementptr i32, ptr [[P:%.*]], i64 1
; CHECK-NEXT: ret ptr [[PHI]]
;
br i1 %c, label %if, label %else
if:
%gep1 = getelementptr i32, ptr %p, i64 1
br label %join
else:
%gep2 = getelementptr i32, ptr %p, i64 1
br label %join
join:
%phi = phi ptr [ %gep1, %if ], [ %gep2, %else ]
ret ptr %phi
}
define ptr @phi_of_gep_different_type(i1 %c, ptr %p) {
; CHECK-LABEL: @phi_of_gep_different_type(
; CHECK-NEXT: br i1 [[C:%.*]], label [[IF:%.*]], label [[ELSE:%.*]]
; CHECK: if:
; CHECK-NEXT: [[GEP1:%.*]] = getelementptr i32, ptr [[P:%.*]], i64 1
; CHECK-NEXT: br label [[JOIN:%.*]]
; CHECK: else:
; CHECK-NEXT: [[GEP2:%.*]] = getelementptr i64, ptr [[P]], i64 1
; CHECK-NEXT: br label [[JOIN]]
; CHECK: join:
; CHECK-NEXT: [[PHI:%.*]] = phi ptr [ [[GEP1]], [[IF]] ], [ [[GEP2]], [[ELSE]] ]
; CHECK-NEXT: ret ptr [[PHI]]
;
br i1 %c, label %if, label %else
if:
%gep1 = getelementptr i32, ptr %p, i64 1
br label %join
else:
%gep2 = getelementptr i64, ptr %p, i64 1
br label %join
join:
%phi = phi ptr [ %gep1, %if ], [ %gep2, %else ]
ret ptr %phi
}
define ptr @gep_of_phi_of_gep(i1 %c, ptr %p) {
; CHECK-LABEL: @gep_of_phi_of_gep(
; CHECK-NEXT: br i1 [[C:%.*]], label [[IF:%.*]], label [[ELSE:%.*]]
; CHECK: if:
; CHECK-NEXT: br label [[JOIN:%.*]]
; CHECK: else:
; CHECK-NEXT: br label [[JOIN]]
; CHECK: join:
; CHECK-NEXT: [[TMP1:%.*]] = phi i64 [ 1, [[IF]] ], [ 2, [[ELSE]] ]
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr i32, ptr [[P:%.*]], i64 [[TMP1]]
; CHECK-NEXT: [[GEP:%.*]] = getelementptr i32, ptr [[TMP2]], i64 1
; CHECK-NEXT: ret ptr [[GEP]]
;
br i1 %c, label %if, label %else
if:
%gep1 = getelementptr i32, ptr %p, i64 1
br label %join
else:
%gep2 = getelementptr i32, ptr %p, i64 2
br label %join
join:
%phi = phi ptr [ %gep1, %if ], [ %gep2, %else ]
%gep = getelementptr i32, ptr %phi, i64 1
ret ptr %gep
}
define ptr @gep_of_phi_of_gep_different_type(i1 %c, ptr %p) {
; CHECK-LABEL: @gep_of_phi_of_gep_different_type(
; CHECK-NEXT: br i1 [[C:%.*]], label [[IF:%.*]], label [[ELSE:%.*]]
; CHECK: if:
; CHECK-NEXT: [[GEP1:%.*]] = getelementptr i32, ptr [[P:%.*]], i64 1
; CHECK-NEXT: br label [[JOIN:%.*]]
; CHECK: else:
; CHECK-NEXT: [[GEP2:%.*]] = getelementptr i64, ptr [[P]], i64 2
; CHECK-NEXT: br label [[JOIN]]
; CHECK: join:
; CHECK-NEXT: [[PHI:%.*]] = phi ptr [ [[GEP1]], [[IF]] ], [ [[GEP2]], [[ELSE]] ]
; CHECK-NEXT: [[GEP:%.*]] = getelementptr i32, ptr [[PHI]], i64 1
; CHECK-NEXT: ret ptr [[GEP]]
;
br i1 %c, label %if, label %else
if:
%gep1 = getelementptr i32, ptr %p, i64 1
br label %join
else:
%gep2 = getelementptr i64, ptr %p, i64 2
br label %join
join:
%phi = phi ptr [ %gep1, %if ], [ %gep2, %else ]
%gep = getelementptr i32, ptr %phi, i64 1
ret ptr %gep
}
define ptr @select_of_gep(i1 %c, ptr %p) {
; CHECK-LABEL: @select_of_gep(
; CHECK-NEXT: [[S_V:%.*]] = select i1 [[C:%.*]], i64 1, i64 2
; CHECK-NEXT: [[S:%.*]] = getelementptr i32, ptr [[P:%.*]], i64 [[S_V]]
; CHECK-NEXT: ret ptr [[S]]
;
%gep1 = getelementptr i32, ptr %p, i64 1
%gep2 = getelementptr i32, ptr %p, i64 2
%s = select i1 %c, ptr %gep1, ptr %gep2
ret ptr %s
}
define ptr @select_of_gep_different_type(i1 %c, ptr %p) {
; CHECK-LABEL: @select_of_gep_different_type(
; CHECK-NEXT: [[GEP1:%.*]] = getelementptr i32, ptr [[P:%.*]], i64 1
; CHECK-NEXT: [[GEP2:%.*]] = getelementptr i64, ptr [[P]], i64 2
; CHECK-NEXT: [[S:%.*]] = select i1 [[C:%.*]], ptr [[GEP1]], ptr [[GEP2]]
; CHECK-NEXT: ret ptr [[S]]
;
%gep1 = getelementptr i32, ptr %p, i64 1
%gep2 = getelementptr i64, ptr %p, i64 2
%s = select i1 %c, ptr %gep1, ptr %gep2
ret ptr %s
}
define void @dse(ptr %p) {
; CHECK-LABEL: @dse(
; CHECK-NEXT: store i32 0, ptr [[P:%.*]], align 4
; CHECK-NEXT: store i8 1, ptr [[P]], align 1
; CHECK-NEXT: ret void
;
store i32 0, ptr %p
store i8 1, ptr %p
ret void
}
declare void @call_i64(i64)
declare void @call_byval(i64, ptr byval(i64))
define void @call_cast_ptr_to_int(ptr %p) {
; CHECK-LABEL: @call_cast_ptr_to_int(
; CHECK-NEXT: [[TMP1:%.*]] = ptrtoint ptr [[P:%.*]] to i64
; CHECK-NEXT: call void @call_i64(i64 [[TMP1]])
; CHECK-NEXT: ret void
;
call void @call_i64(ptr %p)
ret void
}
define void @call_cast_byval(ptr %p, ptr %p2) {
; CHECK-LABEL: @call_cast_byval(
; CHECK-NEXT: [[TMP1:%.*]] = ptrtoint ptr [[P:%.*]] to i64
; CHECK-NEXT: call void @call_byval(i64 [[TMP1]], ptr byval(double) [[P2:%.*]])
; CHECK-NEXT: ret void
;
call void @call_byval(ptr %p, ptr byval(double) %p2)
ret void
}
declare float @fmodf(float, float)
define i32 @const_fold_call_with_func_type_mismatch() {
; CHECK-LABEL: @const_fold_call_with_func_type_mismatch(
; CHECK-NEXT: [[V:%.*]] = call float @fmodf(float 0x40091EB860000000, float 2.000000e+00)
; CHECK-NEXT: ret i32 1066527622
;
%v = call i32 @fmodf(float 0x40091EB860000000, float 2.000000e+00)
ret i32 %v
}
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