89c2e733e8
A pointer is privatizeable if it can be replaced by a new, private one. Privatizing pointer reduces the use count, interaction between unrelated code parts. This is a first step towards replacing argument promotion. While we can already handle recursion (unlike argument promotion!) we are restricted to stack allocations for now because we do not analyze the uses in the callee. Reviewed By: uenoku Differential Revision: https://reviews.llvm.org/D68852
33 lines
1.0 KiB
LLVM
33 lines
1.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --scrub-attributes
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; RUN: opt -S -passes='attributor' -aa-pipeline='basic-aa' -attributor-disable=false -attributor-max-iterations-verify -attributor-max-iterations=2 < %s | FileCheck %s
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define void @f() {
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; CHECK-LABEL: define {{[^@]+}}@f()
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[A:%.*]] = alloca i32, align 1
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; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[A]], align 1
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; CHECK-NEXT: call void @g(i32 [[TMP0]])
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; CHECK-NEXT: ret void
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;
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entry:
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%a = alloca i32, align 1
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call void @g(i32* %a)
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ret void
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}
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define internal void @g(i32* %a) {
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; CHECK-LABEL: define {{[^@]+}}@g
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; CHECK-SAME: (i32 [[TMP0:%.*]])
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; CHECK-NEXT: [[A_PRIV:%.*]] = alloca i32
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; CHECK-NEXT: store i32 [[TMP0]], i32* [[A_PRIV]]
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; CHECK-NEXT: [[AA:%.*]] = load i32, i32* [[A_PRIV]], align 1
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; CHECK-NEXT: call void @z(i32 [[AA]])
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; CHECK-NEXT: ret void
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;
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%aa = load i32, i32* %a, align 1
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call void @z(i32 %aa)
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ret void
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}
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declare void @z(i32)
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