derek.holloway
7502bf64a4
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112 lines
4.3 KiB
LLVM
112 lines
4.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
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; RUN: opt < %s -passes=infer-alignment -S | FileCheck %s
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; InferAlignment should be able to prove vector alignment in the
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; presence of a few mild address computation tricks.
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; ------------------------------------------------------------------------------
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; alloca
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; ------------------------------------------------------------------------------
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define void @alloca(<2 x i64> %y) {
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; CHECK-LABEL: define void @alloca
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; CHECK-SAME: (<2 x i64> [[Y:%.*]]) {
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; CHECK-NEXT: [[ALLOCA:%.*]] = alloca <2 x i64>, align 16
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; CHECK-NEXT: [[LOAD:%.*]] = load <2 x i64>, ptr [[ALLOCA]], align 16
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; CHECK-NEXT: store <2 x i64> [[Y]], ptr [[ALLOCA]], align 16
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; CHECK-NEXT: ret void
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;
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%alloca = alloca <2 x i64>
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%load = load <2 x i64>, ptr %alloca, align 1
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store <2 x i64> %y, ptr %alloca, align 1
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ret void
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}
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; ------------------------------------------------------------------------------
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; global
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; ------------------------------------------------------------------------------
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@x.vector = external global <2 x i64>, align 16
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define void @global(<2 x i64> %y) {
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; CHECK-LABEL: define void @global
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; CHECK-SAME: (<2 x i64> [[Y:%.*]]) {
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; CHECK-NEXT: [[LOAD:%.*]] = load <2 x i64>, ptr @x.vector, align 16
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; CHECK-NEXT: store <2 x i64> [[Y]], ptr @x.vector, align 16
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; CHECK-NEXT: ret void
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;
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%load = load <2 x i64>, ptr @x.vector, align 1
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store <2 x i64> %y, ptr @x.vector, align 1
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ret void
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}
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; ------------------------------------------------------------------------------
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; getelementptr
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; ------------------------------------------------------------------------------
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@vector = external global <2 x i64>, align 16
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@vector.arr = external global [13 x <2 x i64>], align 16
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; ------------------------------------------------------------------------------
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; 1d access
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; ------------------------------------------------------------------------------
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define void @vector_singular(i32 %i, <2 x i64> %y) {
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; CHECK-LABEL: define void @vector_singular
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; CHECK-SAME: (i32 [[I:%.*]], <2 x i64> [[Y:%.*]]) {
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr <2 x i64>, ptr @vector, i32 [[I]]
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; CHECK-NEXT: [[LOAD:%.*]] = load <2 x i64>, ptr [[GEP]], align 16
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; CHECK-NEXT: store <2 x i64> [[Y]], ptr [[GEP]], align 16
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; CHECK-NEXT: ret void
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;
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%gep = getelementptr <2 x i64>, ptr @vector, i32 %i
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%load = load <2 x i64>, ptr %gep, align 1
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store <2 x i64> %y, ptr %gep, align 1
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ret void
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}
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; ------------------------------------------------------------------------------
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; 2d access
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; ------------------------------------------------------------------------------
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define void @vector_array(i32 %i, i32 %j, <2 x i64> %y) {
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; CHECK-LABEL: define void @vector_array
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; CHECK-SAME: (i32 [[I:%.*]], i32 [[J:%.*]], <2 x i64> [[Y:%.*]]) {
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr [13 x <2 x i64>], ptr @vector.arr, i32 [[I]], i32 [[J]]
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; CHECK-NEXT: [[LOAD:%.*]] = load <2 x i64>, ptr [[GEP]], align 16
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; CHECK-NEXT: store <2 x i64> [[Y]], ptr [[GEP]], align 16
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; CHECK-NEXT: ret void
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;
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%gep = getelementptr [13 x <2 x i64>], ptr @vector.arr, i32 %i, i32 %j
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%load = load <2 x i64>, ptr %gep, align 1
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store <2 x i64> %y, ptr %gep, align 1
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ret void
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}
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; ------------------------------------------------------------------------------
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; non-vector array type
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; ------------------------------------------------------------------------------
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; When we see a unaligned load or store from an insufficiently aligned global or
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; alloca, increase the alignment, turning it into an aligned load or store.
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@x.array = internal global [4 x i32] zeroinitializer
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define void @nonvector_array() {
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; CHECK-LABEL: define void @nonvector_array() {
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; CHECK-NEXT: [[LOAD_0:%.*]] = load <16 x i8>, ptr @x.array, align 16
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; CHECK-NEXT: store <16 x i8> zeroinitializer, ptr @x.array, align 16
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr [4 x i32], ptr @x.array, i16 0, i16 2
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; CHECK-NEXT: [[LOAD_1:%.*]] = load <16 x i8>, ptr [[GEP]], align 8
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; CHECK-NEXT: store <16 x i8> zeroinitializer, ptr [[GEP]], align 8
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; CHECK-NEXT: ret void
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;
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%load.0 = load <16 x i8>, ptr @x.array, align 1
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store <16 x i8> zeroinitializer, ptr @x.array, align 1
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%gep = getelementptr [4 x i32], ptr @x.array, i16 0, i16 2
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%load.1 = load <16 x i8>, ptr %gep, align 1
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store <16 x i8> zeroinitializer, ptr %gep, align 1
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ret void
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}
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