derek.holloway
7502bf64a4
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70 lines
2.7 KiB
LLVM
70 lines
2.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=instcombine -S %s | FileCheck %s --check-prefix=NATURAL
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; RUN: opt --data-layout="i16:32" -passes=instcombine -S %s | FileCheck %s --check-prefix=OVERALIGNED
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; The data layouts are little endian, so @foo is 0x0123456789ABCDEF in memory.
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@foo = constant <4 x i16> <i16 u0x2301, i16 u0x6745, i16 u0xAB89, i16 u0xEFCD>, align 8
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declare void @report(i64 %index, i8 %val)
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define void @test_vector_load_i8() {
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; Access and report each individual byte in @foo.
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; OVERALIGNED and NATURAL should have the same result, because the layout of vectors ignores
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; element type alignment, and thus the representation of @foo is the same in both cases.
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; NATURAL-LABEL: @test_vector_load_i8(
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; NATURAL-NEXT: call void @report(i64 0, i8 1)
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; NATURAL-NEXT: call void @report(i64 1, i8 35)
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; NATURAL-NEXT: call void @report(i64 2, i8 69)
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; NATURAL-NEXT: call void @report(i64 3, i8 103)
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; NATURAL-NEXT: call void @report(i64 4, i8 -119)
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; NATURAL-NEXT: call void @report(i64 5, i8 -85)
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; NATURAL-NEXT: call void @report(i64 6, i8 -51)
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; NATURAL-NEXT: call void @report(i64 7, i8 -17)
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; NATURAL-NEXT: ret void
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;
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; OVERALIGNED-LABEL: @test_vector_load_i8(
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; OVERALIGNED-NEXT: call void @report(i64 0, i8 1)
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; OVERALIGNED-NEXT: call void @report(i64 1, i8 35)
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; OVERALIGNED-NEXT: call void @report(i64 2, i8 69)
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; OVERALIGNED-NEXT: call void @report(i64 3, i8 103)
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; OVERALIGNED-NEXT: call void @report(i64 4, i8 -119)
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; OVERALIGNED-NEXT: call void @report(i64 5, i8 -85)
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; OVERALIGNED-NEXT: call void @report(i64 6, i8 -51)
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; OVERALIGNED-NEXT: call void @report(i64 7, i8 -17)
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; OVERALIGNED-NEXT: ret void
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;
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%ptr0 = getelementptr i8, ptr @foo, i64 0
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%res0 = load i8, ptr %ptr0, align 1
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call void @report(i64 0, i8 %res0)
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%ptr1 = getelementptr i8, ptr @foo, i64 1
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%res1 = load i8, ptr %ptr1, align 1
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call void @report(i64 1, i8 %res1)
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%ptr2 = getelementptr i8, ptr @foo, i64 2
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%res2 = load i8, ptr %ptr2, align 1
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call void @report(i64 2, i8 %res2)
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%ptr3 = getelementptr i8, ptr @foo, i64 3
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%res3 = load i8, ptr %ptr3, align 1
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call void @report(i64 3, i8 %res3)
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%ptr4 = getelementptr i8, ptr @foo, i64 4
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%res4 = load i8, ptr %ptr4, align 1
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call void @report(i64 4, i8 %res4)
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%ptr5 = getelementptr i8, ptr @foo, i64 5
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%res5 = load i8, ptr %ptr5, align 1
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call void @report(i64 5, i8 %res5)
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%ptr6 = getelementptr i8, ptr @foo, i64 6
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%res6 = load i8, ptr %ptr6, align 1
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call void @report(i64 6, i8 %res6)
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%ptr7 = getelementptr i8, ptr @foo, i64 7
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%res7 = load i8, ptr %ptr7, align 1
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call void @report(i64 7, i8 %res7)
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ret void
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}
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