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[GlobalOpt] Add test case for #56762. 

Add test case where GlobalOpt fails to remove loads to global fields
with struct types.
This commit is contained in:
Florian Hahn 2022-09-02 11:33:06 +01:00
parent e7eec38246
commit 91e67c0749
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1 changed files with 84 additions and 0 deletions
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84
llvm/test/Transforms/GlobalOpt/sra-many-stores.ll
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@ -10,6 +10,8 @@
; CHECK: @[[GLOBAL:[a-zA-Z0-9_$"\\.-]+]] = internal unnamed_addr global [[STRUCT_WIDGET:%.*]] zeroinitializer
; CHECK: @[[GLOBAL_ARRAY_IN_STRUCT:[a-zA-Z0-9_$"\\.-]+]] = internal unnamed_addr global [[STRUCT_WITH_ARRAY:%.*]] zeroinitializer
; CHECK: @[[GLOBAL_ARRAY:[a-zA-Z0-9_$"\\.-]+]] = internal unnamed_addr global [100 x i64] zeroinitializer
; CHECK: @[[A:[a-zA-Z0-9_$"\\.-]+]] = global i8 0, align 4
; CHECK: @[[B:[a-zA-Z0-9_$"\\.-]+]] = internal unnamed_addr global [[STRUCT_20I8:%.*]] { i8 4, i8 4, i8 4, i8 5, i8 4, i8 4, i8 4, i8 4, i8 4, i8 4, i8 5, i8 4, i8 4, i8 4, i8 4, i8 4, i8 4, i8 4, i8 4, i8 4 }
;.
define internal void @read_struct() {
; CHECK-LABEL: @read_struct(
@ -167,3 +169,85 @@ define void @store_to_array() {
tail call void @read_array()
ret void
}
%struct.20i8 = type { i8, i8, i8, i8, i8, i8, i8, i8, i8, i8, i8, i8, i8, i8, i8, i8, i8, i8, i8, i8 }
@a = global i8 0, align 4
@b = internal global %struct.20i8 { i8 4, i8 4, i8 4, i8 5, i8 4, i8 4, i8 4, i8 4, i8 4, i8 4, i8 5, i8 4, i8 4, i8 4, i8 4, i8 4, i8 4, i8 4, i8 4, i8 4 }
define void @test_single_write_to_global_b() {
; CHECK-LABEL: @test_single_write_to_global_b(
; CHECK-NEXT: store i8 0, ptr getelementptr inbounds ([[STRUCT_20I8:%.*]], ptr @b, i64 0, i32 1), align 1
; CHECK-NEXT: [[I3:%.*]] = load i8, ptr @b, align 16
; CHECK-NEXT: store volatile i8 [[I3]], ptr @a, align 4
; CHECK-NEXT: [[I4:%.*]] = load i8, ptr getelementptr inbounds ([[STRUCT_20I8]], ptr @b, i64 0, i32 2), align 2
; CHECK-NEXT: store volatile i8 [[I4]], ptr @a, align 4
; CHECK-NEXT: [[I5:%.*]] = load i8, ptr getelementptr inbounds ([[STRUCT_20I8]], ptr @b, i64 0, i32 3), align 1
; CHECK-NEXT: store volatile i8 [[I5]], ptr @a, align 4
; CHECK-NEXT: [[I6:%.*]] = load i8, ptr getelementptr inbounds ([[STRUCT_20I8]], ptr @b, i64 0, i32 4), align 4
; CHECK-NEXT: store volatile i8 [[I6]], ptr @a, align 4
; CHECK-NEXT: [[I7:%.*]] = load i8, ptr getelementptr inbounds ([[STRUCT_20I8]], ptr @b, i64 0, i32 5), align 1
; CHECK-NEXT: store volatile i8 [[I7]], ptr @a, align 4
; CHECK-NEXT: [[I8:%.*]] = load i8, ptr getelementptr inbounds ([[STRUCT_20I8]], ptr @b, i64 0, i32 7), align 1
; CHECK-NEXT: store volatile i8 [[I8]], ptr @a, align 4
; CHECK-NEXT: [[I9:%.*]] = load i8, ptr getelementptr inbounds ([[STRUCT_20I8]], ptr @b, i64 0, i32 8), align 8
; CHECK-NEXT: store volatile i8 [[I9]], ptr @a, align 4
; CHECK-NEXT: [[I10:%.*]] = load i8, ptr getelementptr inbounds ([[STRUCT_20I8]], ptr @b, i64 0, i32 9), align 1
; CHECK-NEXT: store volatile i8 [[I10]], ptr @a, align 4
; CHECK-NEXT: [[I11:%.*]] = load i8, ptr getelementptr inbounds ([[STRUCT_20I8]], ptr @b, i64 0, i32 10), align 2
; CHECK-NEXT: store volatile i8 [[I11]], ptr @a, align 4
; CHECK-NEXT: [[I12:%.*]] = load i8, ptr getelementptr inbounds ([[STRUCT_20I8]], ptr @b, i64 0, i32 11), align 1
; CHECK-NEXT: store volatile i8 [[I12]], ptr @a, align 4
; CHECK-NEXT: [[I13:%.*]] = load i8, ptr getelementptr inbounds ([[STRUCT_20I8]], ptr @b, i64 0, i32 12), align 4
; CHECK-NEXT: store volatile i8 [[I13]], ptr @a, align 4
; CHECK-NEXT: [[I14:%.*]] = load i8, ptr getelementptr inbounds ([[STRUCT_20I8]], ptr @b, i64 0, i32 13), align 1
; CHECK-NEXT: store volatile i8 [[I14]], ptr @a, align 4
; CHECK-NEXT: [[I15:%.*]] = load i8, ptr getelementptr inbounds ([[STRUCT_20I8]], ptr @b, i64 0, i32 14), align 2
; CHECK-NEXT: store volatile i8 [[I15]], ptr @a, align 4
; CHECK-NEXT: [[I16:%.*]] = load i8, ptr getelementptr inbounds ([[STRUCT_20I8]], ptr @b, i64 0, i32 15), align 1
; CHECK-NEXT: store volatile i8 [[I16]], ptr @a, align 4
; CHECK-NEXT: [[I17:%.*]] = load i8, ptr getelementptr inbounds ([[STRUCT_20I8]], ptr @b, i64 0, i32 16), align 16
; CHECK-NEXT: store volatile i8 [[I17]], ptr @a, align 4
; CHECK-NEXT: [[I18:%.*]] = load i8, ptr getelementptr inbounds ([[STRUCT_20I8]], ptr @b, i64 0, i32 17), align 1
; CHECK-NEXT: store volatile i8 [[I18]], ptr @a, align 4
; CHECK-NEXT: [[I19:%.*]] = load i8, ptr getelementptr inbounds ([[STRUCT_20I8]], ptr @b, i64 0, i32 18), align 2
; CHECK-NEXT: store volatile i8 [[I19]], ptr @a, align 4
; CHECK-NEXT: ret void
;
store i8 0, ptr getelementptr inbounds (%struct.20i8, ptr @b, i64 0, i32 1), align 1
%i3 = load i8, ptr @b, align 16
store volatile i8 %i3, ptr @a, align 4
%i4 = load i8, ptr getelementptr inbounds (%struct.20i8, ptr @b, i64 0, i32 2), align 2
store volatile i8 %i4, ptr @a, align 4
%i5 = load i8, ptr getelementptr inbounds (%struct.20i8, ptr @b, i64 0, i32 3), align 1
store volatile i8 %i5, ptr @a, align 4
%i6 = load i8, ptr getelementptr inbounds (%struct.20i8, ptr @b, i64 0, i32 4), align 4
store volatile i8 %i6, ptr @a, align 4
%i7 = load i8, ptr getelementptr inbounds (%struct.20i8, ptr @b, i64 0, i32 5), align 1
store volatile i8 %i7, ptr @a, align 4
%i8 = load i8, ptr getelementptr inbounds (%struct.20i8, ptr @b, i64 0, i32 7), align 1
store volatile i8 %i8, ptr @a, align 4
%i9 = load i8, ptr getelementptr inbounds (%struct.20i8, ptr @b, i64 0, i32 8), align 8
store volatile i8 %i9, ptr @a, align 4
%i10 = load i8, ptr getelementptr inbounds (%struct.20i8, ptr @b, i64 0, i32 9), align 1
store volatile i8 %i10, ptr @a, align 4
%i11 = load i8, ptr getelementptr inbounds (%struct.20i8, ptr @b, i64 0, i32 10), align 2
store volatile i8 %i11, ptr @a, align 4
%i12 = load i8, ptr getelementptr inbounds (%struct.20i8, ptr @b, i64 0, i32 11), align 1
store volatile i8 %i12, ptr @a, align 4
%i13 = load i8, ptr getelementptr inbounds (%struct.20i8, ptr @b, i64 0, i32 12), align 4
store volatile i8 %i13, ptr @a, align 4
%i14 = load i8, ptr getelementptr inbounds (%struct.20i8, ptr @b, i64 0, i32 13), align 1
store volatile i8 %i14, ptr @a, align 4
%i15 = load i8, ptr getelementptr inbounds (%struct.20i8, ptr @b, i64 0, i32 14), align 2
store volatile i8 %i15, ptr @a, align 4
%i16 = load i8, ptr getelementptr inbounds (%struct.20i8, ptr @b, i64 0, i32 15), align 1
store volatile i8 %i16, ptr @a, align 4
%i17 = load i8, ptr getelementptr inbounds (%struct.20i8, ptr @b, i64 0, i32 16), align 16
store volatile i8 %i17, ptr @a, align 4
%i18 = load i8, ptr getelementptr inbounds (%struct.20i8, ptr @b, i64 0, i32 17), align 1
store volatile i8 %i18, ptr @a, align 4
%i19 = load i8, ptr getelementptr inbounds (%struct.20i8, ptr @b, i64 0, i32 18), align 2
store volatile i8 %i19, ptr @a, align 4
ret void
}