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llvm-project/llvm/test/Reduce/remove-global-vars.ll

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[Bugpoint redesign] Added Pass to Remove Global Variables Summary: This pass tries to remove Global Variables, as well as their derived uses. For example if a variable `@x` is used by `%call1` and `%call2`, both these uses and the definition of `@x` are deleted. Moreover if `%call1` or `%call2` are used elsewhere those uses are also deleted, and so on recursively. I'm still uncertain if this pass should remove derived uses, I'm open to suggestions. Subscribers: mgorny, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D64176 > llvm-svn: 368918 llvm-svn: 369061
2019-08-16 06:54:09 +08:00
; Test that llvm-reduce can remove uninteresting Global Variables as well as
; their direct uses (which in turn are replaced with 'undef').
;
llvm-reduce: Use %python from lit to get the correct/valid python binary for the reduction script llvm-svn: 371143
2019-09-06 07:33:44 +08:00
; RUN: rm -rf %t
; RUN: mkdir %t
; get the python path from lit
; RUN: echo "#!" %python > %t/test.py
; then include the rest of the test script
; RUN: cat %p/Inputs/remove-global-vars.py >> %t/test.py
Fix llvm-reduce tests so that they don't assume the source code is writable. Instead of copying over the original file permissions, just create a new file and add the executable bit. llvm-svn: 371772
2019-09-13 05:03:49 +08:00
; RUN: chmod +x %t/test.py
llvm-reduce: Use %python from lit to get the correct/valid python binary for the reduction script llvm-svn: 371143
2019-09-06 07:33:44 +08:00
PR43278: llvm-reduce: Use temporary file names (and ToolOutputFile) rather than unique ones - to ensure they're cleaned up This modifies the tool somewhat to only create files when about to run the "interestingness" test, and delete them immediately after - this means some more files will be created sometimes (when "double checking" work - which should probably be fixed/avoided anyway). This now creates temporary files, rather than only unique ones, and also uses ToolOutputFile (without ever calling "keep") to ensure the files are deleted as soon as the interestingness test is run. llvm-svn: 371696
2019-09-12 08:31:57 +08:00
; RUN: llvm-reduce --test %t/test.py %s -o %t/out.ll
; RUN: cat %t/out.ll | FileCheck -implicit-check-not=uninteresting %s
llvm-reduce: For now, mark these tests as requiring a shell (since they execute shell scripts/that's the only entry point at the moment) llvm-svn: 371764
2019-09-13 03:50:54 +08:00
; REQUIRES: shell
[Bugpoint redesign] Added Pass to Remove Global Variables Summary: This pass tries to remove Global Variables, as well as their derived uses. For example if a variable `@x` is used by `%call1` and `%call2`, both these uses and the definition of `@x` are deleted. Moreover if `%call1` or `%call2` are used elsewhere those uses are also deleted, and so on recursively. I'm still uncertain if this pass should remove derived uses, I'm open to suggestions. Subscribers: mgorny, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D64176 > llvm-svn: 368918 llvm-svn: 369061
2019-08-16 06:54:09 +08:00
; CHECK: @interesting = global
@interesting = global i32 0, align 4
@uninteresting = global i32 1, align 4
define i32 @main() {
entry:
%0 = load i32, i32* @uninteresting, align 4
; CHECK: store i32 undef, i32* @interesting, align 4
store i32 %0, i32* @interesting, align 4
; CHECK: load i32, i32* @interesting, align 4
%1 = load i32, i32* @interesting, align 4
store i32 %1, i32* @uninteresting, align 4
; CHECK: %inc = add nsw i32 undef, 1
%inc = add nsw i32 %0, 1
; CHECK: store i32 %inc, i32* @interesting, align 4
store i32 %inc, i32* @interesting, align 4
ret i32 0
}