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[GVN] Add test for capture tracking use limit. 

Test for capture-tracking-max-uses-to-explore, adjusted in D126236.
This commit is contained in:
Florian Hahn 2022-06-02 19:47:43 +01:00
parent bf7dbc2a30
commit 44c86e5cdc
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1 changed files with 64 additions and 0 deletions
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llvm/test/Transforms/GVN/capture-tracking-limit.ll Normal file
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -aa-pipeline=basic-aa -passes="gvn" -S %s | FileCheck --check-prefixes=CHECK,LIMIT-TOO-SMALL %s
; RUN: opt -aa-pipeline=basic-aa -passes="gvn" -S -capture-tracking-max-uses-to-explore=20 %s | FileCheck --check-prefixes=CHECK,LIMIT-TOO-SMALL %s
; RUN: opt -aa-pipeline=basic-aa -passes="gvn" -S -capture-tracking-max-uses-to-explore=21 %s | FileCheck --check-prefixes=CHECK,LIMIT %s
define i32 @test1(i32* %p, i1 %C) {
; CHECK-LABEL: @test1(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: call void @dont_capture(i32* [[A]])
; CHECK-NEXT: call void @dont_capture(i32* [[A]])
; CHECK-NEXT: call void @dont_capture(i32* [[A]])
; CHECK-NEXT: call void @dont_capture(i32* [[A]])
; CHECK-NEXT: call void @dont_capture(i32* [[A]])
; CHECK-NEXT: call void @dont_capture(i32* [[A]])
; CHECK-NEXT: call void @dont_capture(i32* [[A]])
; CHECK-NEXT: call void @dont_capture(i32* [[A]])
; CHECK-NEXT: call void @dont_capture(i32* [[A]])
; CHECK-NEXT: call void @dont_capture(i32* [[A]])
; CHECK-NEXT: call void @dont_capture(i32* [[A]])
; CHECK-NEXT: call void @dont_capture(i32* [[A]])
; CHECK-NEXT: call void @dont_capture(i32* [[A]])
; CHECK-NEXT: call void @dont_capture(i32* [[A]])
; CHECK-NEXT: call void @dont_capture(i32* [[A]])
; CHECK-NEXT: call void @dont_capture(i32* [[A]])
; CHECK-NEXT: call void @dont_capture(i32* [[A]])
; CHECK-NEXT: call void @dont_capture(i32* [[A]])
; CHECK-NEXT: call void @dont_capture(i32* [[A]])
; CHECK-NEXT: store i32 1, i32* [[A]], align 4
; CHECK-NEXT: call void @may_write()
; LIMIT-TOO-SMALL-NEXT: [[L:%.*]] = load i32, i32* [[A]], align 4
; LIMIT-TOO-SMALL-NEXT: ret i32 [[L]]
; LIMIT-NEXT: ret i32 1
;
entry:
%a = alloca i32
call void @dont_capture(i32* %a)
call void @dont_capture(i32* %a)
call void @dont_capture(i32* %a)
call void @dont_capture(i32* %a)
call void @dont_capture(i32* %a)
call void @dont_capture(i32* %a)
call void @dont_capture(i32* %a)
call void @dont_capture(i32* %a)
call void @dont_capture(i32* %a)
call void @dont_capture(i32* %a)
call void @dont_capture(i32* %a)
call void @dont_capture(i32* %a)
call void @dont_capture(i32* %a)
call void @dont_capture(i32* %a)
call void @dont_capture(i32* %a)
call void @dont_capture(i32* %a)
call void @dont_capture(i32* %a)
call void @dont_capture(i32* %a)
call void @dont_capture(i32* %a)
store i32 1, i32* %a
call void @may_write()
%l = load i32, i32* %a
ret i32 %l
}
declare void @dont_capture(i32* nocapture)
declare void @may_write()