0f6c18e8c6
This patch implements a small region pass that saves the context's state. The patch is now used in the default pipeline to save the context state instead of the hard-coded call to Context::save(). The concept behind this is that the passes themselves should not have to do the actual saving/restoring of the IR state, because that would make it challenging to reorder them in the pipeline. Having separate save/restore passes makes the transformation passes more composable as parts of arbitrary pipelines.
29 lines
1.2 KiB
LLVM
29 lines
1.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -passes=sandbox-vectorizer -sbvec-vec-reg-bits=1024 -sbvec-allow-non-pow2 -sbvec-passes="seed-collection<tr-save,bottom-up-vec,tr-accept>" %s -S | FileCheck %s
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define void @cross_bbs(ptr %ptr) {
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; CHECK-LABEL: define void @cross_bbs(
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; CHECK-SAME: ptr [[PTR:%.*]]) {
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; CHECK-NEXT: [[PTR0:%.*]] = getelementptr i8, ptr [[PTR]], i32 0
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; CHECK-NEXT: [[PTR1:%.*]] = getelementptr i8, ptr [[PTR]], i32 1
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; CHECK-NEXT: [[L0:%.*]] = load i8, ptr [[PTR0]], align 1
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; CHECK-NEXT: [[L1:%.*]] = load i8, ptr [[PTR1]], align 1
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; CHECK-NEXT: br label %[[BB:.*]]
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; CHECK: [[BB]]:
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; CHECK-NEXT: [[PACK:%.*]] = insertelement <2 x i8> poison, i8 [[L0]], i32 0
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; CHECK-NEXT: [[PACK1:%.*]] = insertelement <2 x i8> [[PACK]], i8 [[L1]], i32 1
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; CHECK-NEXT: store <2 x i8> [[PACK1]], ptr [[PTR0]], align 1
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; CHECK-NEXT: ret void
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;
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%ptr0 = getelementptr i8, ptr %ptr, i32 0
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%ptr1 = getelementptr i8, ptr %ptr, i32 1
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%l0 = load i8, ptr %ptr0
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%l1 = load i8, ptr %ptr1
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br label %bb
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bb:
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store i8 %l0, ptr %ptr0
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store i8 %l1, ptr %ptr1
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ret void
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}
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