3da7efedaa
The Attributor can, to some degree, do what IPConstantProp does. We can consequently use the corner cases already collected and tested for in the IPConstantProp tests to improve Attributor test coverage. This exposed various bugs fixed in previous Attributor patches. Not all functionality of IPConstantProp is available in AAValueSimplify and AAIsDead so some tests show that we cannot perform the expected constant propagation. Reviewers: fhahn, efriedma, mssimpso, davide Subscribers: bollu, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D69748
35 lines
892 B
LLVM
35 lines
892 B
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=1 < %s | FileCheck %s
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; See PR26774
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define i32 @baz() {
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; CHECK-LABEL: define {{[^@]+}}@baz()
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; CHECK-NEXT: ret i32 10
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;
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ret i32 10
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}
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; We can const-prop @baz's return value *into* @foo, but cannot
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; constprop @foo's return value into bar.
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define linkonce_odr i32 @foo() {
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; CHECK-LABEL: define {{[^@]+}}@foo()
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; CHECK-NEXT: [[VAL:%.*]] = call i32 @baz()
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; CHECK-NEXT: ret i32 10
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;
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%val = call i32 @baz()
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ret i32 %val
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}
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define i32 @bar() {
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; CHECK-LABEL: define {{[^@]+}}@bar()
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; CHECK-NEXT: [[VAL:%.*]] = call i32 @foo()
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; CHECK-NEXT: ret i32 [[VAL]]
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;
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%val = call i32 @foo()
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ret i32 %val
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}
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