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llvm-project/llvm/test/Transforms/InstCombine/vec_phi_extract.ll
Nikita Popov 6ecbc0c96e
[InstCombine] Canonicalize GEP source element types (#180745) 
Canonicalize GEP source element types from `%T` to `[sizeof(%T) x i8]`.

This is intended to flush out any remaining places that rely on GEP
element types, as part of the `ptradd` migration. The impact of this
change is expected to be fairly minimal (we might enable a few more
hoist/sink style folds that depend on equal GEP types).
2026-03-06 14:48:01 +00:00

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
define void @f(i64 %val, i32 %limit, ptr %ptr) {
; CHECK-LABEL: @f(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = trunc i64 [[VAL:%.*]] to i32
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[TMP1:%.*]] = phi i32 [ [[TMP0]], [[ENTRY:%.*]] ], [ [[TMP5:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[END:%.*]] = icmp ult i32 [[TMP1]], [[LIMIT:%.*]]
; CHECK-NEXT: [[TMP2:%.*]] = add i32 [[TMP1]], 10
; CHECK-NEXT: [[TMP3:%.*]] = sext i32 [[TMP1]] to i64
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr [4 x i8], ptr [[PTR:%.*]], i64 [[TMP3]]
; CHECK-NEXT: store i32 [[TMP2]], ptr [[TMP4]], align 4
; CHECK-NEXT: [[TMP5]] = add i32 [[TMP1]], 16
; CHECK-NEXT: br i1 [[END]], label [[LOOP]], label [[RET:%.*]]
; CHECK: ret:
; CHECK-NEXT: ret void
;
entry:
%tempvector = insertelement <16 x i64> undef, i64 %val, i32 0
%vector = shufflevector <16 x i64> %tempvector, <16 x i64> undef, <16 x i32> zeroinitializer
%0 = add <16 x i64> %vector, <i64 0, i64 1, i64 2, i64 3, i64 4, i64 5, i64 6, i64 7, i64 8, i64 9, i64 10, i64 11, i64 12, i64 13, i64 14, i64 15>
%1 = trunc <16 x i64> %0 to <16 x i32>
br label %loop
loop:
%2 = phi <16 x i32> [ %1, %entry ], [ %inc, %loop ]
%elt = extractelement <16 x i32> %2, i32 0
%end = icmp ult i32 %elt, %limit
%3 = add i32 10, %elt
%4 = sext i32 %elt to i64
%5 = getelementptr i32, ptr %ptr, i64 %4
store i32 %3, ptr %5
%inc = add <16 x i32> %2, <i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16>
br i1 %end, label %loop, label %ret
ret:
ret void
}
define void @copy(i64 %val, i32 %limit, ptr %ptr) {
; CHECK-LABEL: @copy(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = trunc i64 [[VAL:%.*]] to i32
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[TMP1:%.*]] = phi i32 [ [[TMP0]], [[ENTRY:%.*]] ], [ [[TMP5:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[END:%.*]] = icmp ult i32 [[TMP1]], [[LIMIT:%.*]]
; CHECK-NEXT: [[TMP2:%.*]] = add i32 [[TMP1]], 10
; CHECK-NEXT: [[TMP3:%.*]] = sext i32 [[TMP1]] to i64
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr [4 x i8], ptr [[PTR:%.*]], i64 [[TMP3]]
; CHECK-NEXT: store i32 [[TMP2]], ptr [[TMP4]], align 4
; CHECK-NEXT: [[TMP5]] = add i32 [[TMP1]], 16
; CHECK-NEXT: br i1 [[END]], label [[LOOP]], label [[RET:%.*]]
; CHECK: ret:
; CHECK-NEXT: ret void
;
entry:
%tempvector = insertelement <16 x i64> undef, i64 %val, i32 0
%vector = shufflevector <16 x i64> %tempvector, <16 x i64> undef, <16 x i32> zeroinitializer
%0 = add <16 x i64> %vector, <i64 0, i64 1, i64 2, i64 3, i64 4, i64 5, i64 6, i64 7, i64 8, i64 9, i64 10, i64 11, i64 12, i64 13, i64 14, i64 15>
%1 = trunc <16 x i64> %0 to <16 x i32>
br label %loop
loop:
%2 = phi <16 x i32> [ %1, %entry ], [ %inc, %loop ]
%elt = extractelement <16 x i32> %2, i32 0
%eltcopy = extractelement <16 x i32> %2, i32 0
%end = icmp ult i32 %elt, %limit
%3 = add i32 10, %eltcopy
%4 = sext i32 %elt to i64
%5 = getelementptr i32, ptr %ptr, i64 %4
store i32 %3, ptr %5
%inc = add <16 x i32> %2, <i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16>
br i1 %end, label %loop, label %ret
ret:
ret void
}
define void @nocopy(i64 %val, i32 %limit, ptr %ptr) {
; CHECK-LABEL: @nocopy(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = trunc i64 [[VAL:%.*]] to i32
; CHECK-NEXT: [[TMP1:%.*]] = insertelement <16 x i32> poison, i32 [[TMP0]], i64 0
; CHECK-NEXT: [[TMP2:%.*]] = shufflevector <16 x i32> [[TMP1]], <16 x i32> poison, <16 x i32> zeroinitializer
; CHECK-NEXT: [[TMP3:%.*]] = add <16 x i32> [[TMP2]], <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[TMP4:%.*]] = phi <16 x i32> [ [[TMP3]], [[ENTRY:%.*]] ], [ [[INC:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[ELT:%.*]] = extractelement <16 x i32> [[TMP4]], i64 0
; CHECK-NEXT: [[ELTCOPY:%.*]] = extractelement <16 x i32> [[TMP4]], i64 1
; CHECK-NEXT: [[END:%.*]] = icmp ult i32 [[ELT]], [[LIMIT:%.*]]
; CHECK-NEXT: [[TMP5:%.*]] = add i32 [[ELTCOPY]], 10
; CHECK-NEXT: [[TMP6:%.*]] = sext i32 [[ELT]] to i64
; CHECK-NEXT: [[TMP7:%.*]] = getelementptr [4 x i8], ptr [[PTR:%.*]], i64 [[TMP6]]
; CHECK-NEXT: store i32 [[TMP5]], ptr [[TMP7]], align 4
; CHECK-NEXT: [[INC]] = add <16 x i32> [[TMP4]], splat (i32 16)
; CHECK-NEXT: br i1 [[END]], label [[LOOP]], label [[RET:%.*]]
; CHECK: ret:
; CHECK-NEXT: ret void
;
entry:
%tempvector = insertelement <16 x i64> undef, i64 %val, i32 0
%vector = shufflevector <16 x i64> %tempvector, <16 x i64> undef, <16 x i32> zeroinitializer
%0 = add <16 x i64> %vector, <i64 0, i64 1, i64 2, i64 3, i64 4, i64 5, i64 6, i64 7, i64 8, i64 9, i64 10, i64 11, i64 12, i64 13, i64 14, i64 15>
%1 = trunc <16 x i64> %0 to <16 x i32>
br label %loop
loop:
%2 = phi <16 x i32> [ %1, %entry ], [ %inc, %loop ]
%elt = extractelement <16 x i32> %2, i32 0
%eltcopy = extractelement <16 x i32> %2, i32 1
%end = icmp ult i32 %elt, %limit
%3 = add i32 10, %eltcopy
%4 = sext i32 %elt to i64
%5 = getelementptr i32, ptr %ptr, i64 %4
store i32 %3, ptr %5
%inc = add <16 x i32> %2, <i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16>
br i1 %end, label %loop, label %ret
ret:
ret void
}
define i1 @g(<3 x i32> %input_2, i1 %c1) {
; CHECK-LABEL: @g(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = extractelement <3 x i32> [[INPUT_2:%.*]], i64 0
; CHECK-NEXT: br label [[FOR_COND:%.*]]
; CHECK: for.cond:
; CHECK-NEXT: [[TMP1:%.*]] = phi i32 [ [[TMP0]], [[ENTRY:%.*]] ], [ [[TMP4:%.*]], [[FOR_BODY:%.*]] ]
; CHECK-NEXT: [[TMP2:%.*]] = phi i32 [ poison, [[ENTRY]] ], [ [[TMP3:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT: br i1 [[C1:%.*]], label [[FOR_END:%.*]], label [[FOR_BODY]]
; CHECK: for.body:
; CHECK-NEXT: [[TMP3]] = add i32 [[TMP2]], -1
; CHECK-NEXT: [[SUB44_ELT:%.*]] = sub i32 0, [[TMP2]]
; CHECK-NEXT: [[TMP4]] = sdiv i32 [[TMP1]], [[SUB44_ELT]]
; CHECK-NEXT: br label [[FOR_COND]]
; CHECK: for.end:
; CHECK-NEXT: [[TOBOOL313:%.*]] = icmp eq i32 [[TMP1]], 0
; CHECK-NEXT: ret i1 [[TOBOOL313]]
;
entry:
br label %for.cond
for.cond:
%input_2.addr.0 = phi <3 x i32> [ %input_2, %entry ], [ %div45, %for.body ]
%input_1.addr.1 = phi <3 x i32> [ poison, %entry ], [ %dec43, %for.body ]
br i1 %c1, label %for.end, label %for.body
for.body:
%dec43 = add <3 x i32> %input_1.addr.1, <i32 -1, i32 -1, i32 -1>
%sub44 = sub <3 x i32> <i32 -1, i32 -1, i32 -1>, %dec43
%div45 = sdiv <3 x i32> %input_2.addr.0, %sub44
br label %for.cond
for.end:
%0 = extractelement <3 x i32> %input_2.addr.0, i32 0
%.89 = select i1 false, i32 0, i32 %0
%tobool313 = icmp eq i32 %.89, 0
ret i1 %tobool313
}
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