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[NFC][SCEV] Add some more ptrtoint/PR46786 -related tests

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Roman Lebedev 2020-10-17 15:43:32 +03:00
parent b9e789447f
commit bd6d41f52e
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73
llvm/test/Analysis/ScalarEvolution/ashr.ll Normal file
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@ -0,0 +1,73 @@
; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
; RUN: opt < %s --data-layout="e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" -S -analyze -enable-new-pm=0 -scalar-evolution | FileCheck --check-prefixes=ALL,X64 %s
; RUN: opt < %s --data-layout="e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" -S -disable-output "-passes=print<scalar-evolution>" 2>&1 | FileCheck --check-prefixes=ALL,X64 %s
; RUN: opt < %s --data-layout="e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-f64:32:64-f80:32-n8:16:32-S128" -S -analyze -enable-new-pm=0 -scalar-evolution | FileCheck --check-prefixes=ALL,X32 %s
; RUN: opt < %s --data-layout="e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-f64:32:64-f80:32-n8:16:32-S128" -S -disable-output "-passes=print<scalar-evolution>" 2>&1 | FileCheck --check-prefixes=ALL,X32 %s
; In general, we can't deal with ashr.
define i32 @t0(i32 %x, i32 %y) {
; ALL-LABEL: 't0'
; ALL-NEXT: Classifying expressions for: @t0
; ALL-NEXT: %i0 = ashr i32 %x, %y
; ALL-NEXT: --> %i0 U: full-set S: full-set
; ALL-NEXT: Determining loop execution counts for: @t0
;
%i0 = ashr i32 %x, %y
ret i32 %i0
}
; Not even if we know it's exact
define i32 @t1(i32 %x, i32 %y) {
; ALL-LABEL: 't1'
; ALL-NEXT: Classifying expressions for: @t1
; ALL-NEXT: %i0 = ashr exact i32 %x, %y
; ALL-NEXT: --> %i0 U: full-set S: full-set
; ALL-NEXT: Determining loop execution counts for: @t1
;
%i0 = ashr exact i32 %x, %y
ret i32 %i0
}
; Not even if the shift amount is a constant.
define i32 @t2(i32 %x, i32 %y) {
; ALL-LABEL: 't2'
; ALL-NEXT: Classifying expressions for: @t2
; ALL-NEXT: %i0 = ashr i32 %x, 4
; ALL-NEXT: --> %i0 U: full-set S: [-134217728,134217728)
; ALL-NEXT: Determining loop execution counts for: @t2
;
%i0 = ashr i32 %x, 4
ret i32 %i0
}
; However, if it's a constant AND the shift is exact, we can model it!
define i32 @t3(i32 %x, i32 %y) {
; ALL-LABEL: 't3'
; ALL-NEXT: Classifying expressions for: @t3
; ALL-NEXT: %i0 = ashr exact i32 %x, 4
; ALL-NEXT: --> %i0 U: full-set S: [-134217728,134217728)
; ALL-NEXT: Determining loop execution counts for: @t3
;
%i0 = ashr exact i32 %x, 4
ret i32 %i0
}
; As long as the shift amount is in-bounds
define i32 @t4(i32 %x, i32 %y) {
; ALL-LABEL: 't4'
; ALL-NEXT: Classifying expressions for: @t4
; ALL-NEXT: %i0 = ashr exact i32 %x, 32
; ALL-NEXT: --> %i0 U: full-set S: full-set
; ALL-NEXT: Determining loop execution counts for: @t4
;
%i0 = ashr exact i32 %x, 32
ret i32 %i0
}
; One more test, just to see that we model constant correctly
define i32 @t5(i32 %x, i32 %y) {
; ALL-LABEL: 't5'
; ALL-NEXT: Classifying expressions for: @t5
; ALL-NEXT: %i0 = ashr exact i32 %x, 5
; ALL-NEXT: --> %i0 U: full-set S: [-67108864,67108864)
; ALL-NEXT: Determining loop execution counts for: @t5
;
%i0 = ashr exact i32 %x, 5
ret i32 %i0
}

171
llvm/test/Analysis/ScalarEvolution/ptrtoint.ll
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@ -237,3 +237,174 @@ define void @ptrtoint_of_bitcast_of_gep(i8* %in, i64* %out0) {
store i64 %p0, i64* %out0
ret void
}
; void pr46786_c26_char(char* start, char *end, char *other) {
; for (char* cur = start; cur != end; ++cur)
; other[cur - start] += *cur;
; }
define void @pr46786_c26_char(i8* %arg, i8* %arg1, i8* %arg2) {
; X64-LABEL: 'pr46786_c26_char'
; X64-NEXT: Classifying expressions for: @pr46786_c26_char
; X64-NEXT: %i4 = ptrtoint i8* %arg to i64
; X64-NEXT: --> %i4 U: full-set S: full-set
; X64-NEXT: %i7 = phi i8* [ %arg, %bb3 ], [ %i14, %bb6 ]
; X64-NEXT: --> {%arg,+,1}<nuw><%bb6> U: full-set S: full-set Exits: (-1 + %arg1) LoopDispositions: { %bb6: Computable }
; X64-NEXT: %i8 = load i8, i8* %i7, align 1
; X64-NEXT: --> %i8 U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X64-NEXT: %i9 = ptrtoint i8* %i7 to i64
; X64-NEXT: --> %i9 U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X64-NEXT: %i10 = sub i64 %i9, %i4
; X64-NEXT: --> ((-1 * %i4) + %i9) U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X64-NEXT: %i11 = getelementptr inbounds i8, i8* %arg2, i64 %i10
; X64-NEXT: --> ((-1 * %i4) + %i9 + %arg2) U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X64-NEXT: %i12 = load i8, i8* %i11, align 1
; X64-NEXT: --> %i12 U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X64-NEXT: %i13 = add i8 %i12, %i8
; X64-NEXT: --> (%i12 + %i8) U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X64-NEXT: %i14 = getelementptr inbounds i8, i8* %i7, i64 1
; X64-NEXT: --> {(1 + %arg)<nsw>,+,1}<nuw><%bb6> U: full-set S: full-set Exits: %arg1 LoopDispositions: { %bb6: Computable }
; X64-NEXT: Determining loop execution counts for: @pr46786_c26_char
; X64-NEXT: Loop %bb6: backedge-taken count is (-1 + (-1 * %arg) + %arg1)
; X64-NEXT: Loop %bb6: max backedge-taken count is -2
; X64-NEXT: Loop %bb6: Predicated backedge-taken count is (-1 + (-1 * %arg) + %arg1)
; X64-NEXT: Predicates:
; X64: Loop %bb6: Trip multiple is 1
;
; X32-LABEL: 'pr46786_c26_char'
; X32-NEXT: Classifying expressions for: @pr46786_c26_char
; X32-NEXT: %i4 = ptrtoint i8* %arg to i64
; X32-NEXT: --> %i4 U: [0,4294967296) S: [-4294967296,4294967296)
; X32-NEXT: %i7 = phi i8* [ %arg, %bb3 ], [ %i14, %bb6 ]
; X32-NEXT: --> {%arg,+,1}<nuw><%bb6> U: full-set S: full-set Exits: (-1 + %arg1) LoopDispositions: { %bb6: Computable }
; X32-NEXT: %i8 = load i8, i8* %i7, align 1
; X32-NEXT: --> %i8 U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X32-NEXT: %i9 = ptrtoint i8* %i7 to i64
; X32-NEXT: --> %i9 U: [0,4294967296) S: [-4294967296,4294967296) Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X32-NEXT: %i10 = sub i64 %i9, %i4
; X32-NEXT: --> ((-1 * %i4)<nsw> + %i9) U: [-4294967295,4294967296) S: [-8589934591,8589934592) Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X32-NEXT: %i11 = getelementptr inbounds i8, i8* %arg2, i64 %i10
; X32-NEXT: --> ((trunc i64 %i9 to i32) + (-1 * (trunc i64 %i4 to i32)) + %arg2) U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X32-NEXT: %i12 = load i8, i8* %i11, align 1
; X32-NEXT: --> %i12 U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X32-NEXT: %i13 = add i8 %i12, %i8
; X32-NEXT: --> (%i12 + %i8) U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X32-NEXT: %i14 = getelementptr inbounds i8, i8* %i7, i64 1
; X32-NEXT: --> {(1 + %arg)<nsw>,+,1}<nuw><%bb6> U: full-set S: full-set Exits: %arg1 LoopDispositions: { %bb6: Computable }
; X32-NEXT: Determining loop execution counts for: @pr46786_c26_char
; X32-NEXT: Loop %bb6: backedge-taken count is (-1 + (-1 * %arg) + %arg1)
; X32-NEXT: Loop %bb6: max backedge-taken count is -2
; X32-NEXT: Loop %bb6: Predicated backedge-taken count is (-1 + (-1 * %arg) + %arg1)
; X32-NEXT: Predicates:
; X32: Loop %bb6: Trip multiple is 1
;
%i = icmp eq i8* %arg, %arg1
br i1 %i, label %bb5, label %bb3
bb3:
%i4 = ptrtoint i8* %arg to i64
br label %bb6
bb6:
%i7 = phi i8* [ %arg, %bb3 ], [ %i14, %bb6 ]
%i8 = load i8, i8* %i7
%i9 = ptrtoint i8* %i7 to i64
%i10 = sub i64 %i9, %i4
%i11 = getelementptr inbounds i8, i8* %arg2, i64 %i10
%i12 = load i8, i8* %i11
%i13 = add i8 %i12, %i8
store i8 %i13, i8* %i11
%i14 = getelementptr inbounds i8, i8* %i7, i64 1
%i15 = icmp eq i8* %i14, %arg1
br i1 %i15, label %bb5, label %bb6
bb5:
ret void
}
; void pr46786_c26_int(int* start, int *end, int *other) {
; for (int* cur = start; cur != end; ++cur)
; other[cur - start] += *cur;
; }
define void @pr46786_c26_int(i32* %arg, i32* %arg1, i32* %arg2) {
; X64-LABEL: 'pr46786_c26_int'
; X64-NEXT: Classifying expressions for: @pr46786_c26_int
; X64-NEXT: %i4 = ptrtoint i32* %arg to i64
; X64-NEXT: --> %i4 U: full-set S: full-set
; X64-NEXT: %i7 = phi i32* [ %arg, %bb3 ], [ %i15, %bb6 ]
; X64-NEXT: --> {%arg,+,4}<nuw><%bb6> U: full-set S: full-set Exits: ((4 * ((-4 + (-1 * %arg) + %arg1) /u 4))<nuw> + %arg) LoopDispositions: { %bb6: Computable }
; X64-NEXT: %i8 = load i32, i32* %i7, align 4
; X64-NEXT: --> %i8 U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X64-NEXT: %i9 = ptrtoint i32* %i7 to i64
; X64-NEXT: --> %i9 U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X64-NEXT: %i10 = sub i64 %i9, %i4
; X64-NEXT: --> ((-1 * %i4) + %i9) U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X64-NEXT: %i11 = ashr exact i64 %i10, 2
; X64-NEXT: --> %i11 U: full-set S: [-2305843009213693952,2305843009213693952) Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X64-NEXT: %i12 = getelementptr inbounds i32, i32* %arg2, i64 %i11
; X64-NEXT: --> ((4 * %i11)<nsw> + %arg2)<nsw> U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X64-NEXT: %i13 = load i32, i32* %i12, align 4
; X64-NEXT: --> %i13 U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X64-NEXT: %i14 = add nsw i32 %i13, %i8
; X64-NEXT: --> (%i13 + %i8) U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X64-NEXT: %i15 = getelementptr inbounds i32, i32* %i7, i64 1
; X64-NEXT: --> {(4 + %arg)<nsw>,+,4}<nuw><%bb6> U: full-set S: full-set Exits: (4 + (4 * ((-4 + (-1 * %arg) + %arg1) /u 4))<nuw> + %arg) LoopDispositions: { %bb6: Computable }
; X64-NEXT: Determining loop execution counts for: @pr46786_c26_int
; X64-NEXT: Loop %bb6: backedge-taken count is ((-4 + (-1 * %arg) + %arg1) /u 4)
; X64-NEXT: Loop %bb6: max backedge-taken count is 4611686018427387903
; X64-NEXT: Loop %bb6: Predicated backedge-taken count is ((-4 + (-1 * %arg) + %arg1) /u 4)
; X64-NEXT: Predicates:
; X64: Loop %bb6: Trip multiple is 1
;
; X32-LABEL: 'pr46786_c26_int'
; X32-NEXT: Classifying expressions for: @pr46786_c26_int
; X32-NEXT: %i4 = ptrtoint i32* %arg to i64
; X32-NEXT: --> %i4 U: [0,4294967296) S: [-4294967296,4294967296)
; X32-NEXT: %i7 = phi i32* [ %arg, %bb3 ], [ %i15, %bb6 ]
; X32-NEXT: --> {%arg,+,4}<nuw><%bb6> U: full-set S: full-set Exits: ((4 * ((-4 + (-1 * %arg) + %arg1) /u 4))<nuw> + %arg) LoopDispositions: { %bb6: Computable }
; X32-NEXT: %i8 = load i32, i32* %i7, align 4
; X32-NEXT: --> %i8 U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X32-NEXT: %i9 = ptrtoint i32* %i7 to i64
; X32-NEXT: --> %i9 U: [0,4294967296) S: [-4294967296,4294967296) Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X32-NEXT: %i10 = sub i64 %i9, %i4
; X32-NEXT: --> ((-1 * %i4)<nsw> + %i9) U: [-4294967295,4294967296) S: [-8589934591,8589934592) Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X32-NEXT: %i11 = ashr exact i64 %i10, 2
; X32-NEXT: --> %i11 U: full-set S: [-2147483648,2147483648) Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X32-NEXT: %i12 = getelementptr inbounds i32, i32* %arg2, i64 %i11
; X32-NEXT: --> ((4 * (trunc i64 %i11 to i32))<nsw> + %arg2)<nsw> U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X32-NEXT: %i13 = load i32, i32* %i12, align 4
; X32-NEXT: --> %i13 U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X32-NEXT: %i14 = add nsw i32 %i13, %i8
; X32-NEXT: --> (%i13 + %i8) U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %bb6: Variant }
; X32-NEXT: %i15 = getelementptr inbounds i32, i32* %i7, i64 1
; X32-NEXT: --> {(4 + %arg)<nsw>,+,4}<nuw><%bb6> U: full-set S: full-set Exits: (4 + (4 * ((-4 + (-1 * %arg) + %arg1) /u 4))<nuw> + %arg) LoopDispositions: { %bb6: Computable }
; X32-NEXT: Determining loop execution counts for: @pr46786_c26_int
; X32-NEXT: Loop %bb6: backedge-taken count is ((-4 + (-1 * %arg) + %arg1) /u 4)
; X32-NEXT: Loop %bb6: max backedge-taken count is 1073741823
; X32-NEXT: Loop %bb6: Predicated backedge-taken count is ((-4 + (-1 * %arg) + %arg1) /u 4)
; X32-NEXT: Predicates:
; X32: Loop %bb6: Trip multiple is 1
;
%i = icmp eq i32* %arg, %arg1
br i1 %i, label %bb5, label %bb3
bb3:
%i4 = ptrtoint i32* %arg to i64
br label %bb6
bb6:
%i7 = phi i32* [ %arg, %bb3 ], [ %i15, %bb6 ]
%i8 = load i32, i32* %i7
%i9 = ptrtoint i32* %i7 to i64
%i10 = sub i64 %i9, %i4
%i11 = ashr exact i64 %i10, 2
%i12 = getelementptr inbounds i32, i32* %arg2, i64 %i11
%i13 = load i32, i32* %i12
%i14 = add nsw i32 %i13, %i8
store i32 %i14, i32* %i12
%i15 = getelementptr inbounds i32, i32* %i7, i64 1
%i16 = icmp eq i32* %i15, %arg1
br i1 %i16, label %bb5, label %bb6
bb5:
ret void
}