tests: assembly: cstring-merging: Disable GlobalMerge pass #144150
Merged
+1 −1
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode characters
The test relies on LLVM not merging all the globals into one and would currently otherwise fail on powerpc64le. Signed-off-by: Jens Reidel <adrian@travitia.xyz>
Collaborator
| rustbot has assigned @Mark-Simulacrum. Use |
rustbot added S-waiting-on-review 
Member
| @bors r+ |
Collaborator
bors added S-waiting-on-bors GuillaumeGomez added a commit to GuillaumeGomez/rust that referenced this pull request Jul 20, 2025
…lacrum tests: assembly: cstring-merging: Disable GlobalMerge pass The test relies on LLVM not merging all the globals into one and would currently otherwise fail on powerpc64le. See https://github.com/llvm/llvm-project/blob/release/20.x/llvm/lib/CodeGen/GlobalMerge.cpp and here's the assembly generated prior to disabling the pass: <details> <summary>Expand me</summary> ```asm .abiversion 2 .file "cstring_merging.5aa81ea7b99b31fe-cgu.0" .section .text.cstr,"ax",`@progbits` .globl cstr .p2align 4 .type cstr,`@function` cstr: .Lfunc_begin0: .cfi_startproc .Lfunc_gep0: addis 2, 12, .TOC.-.Lfunc_gep0@ha addi 2, 2, .TOC.-.Lfunc_gep0@l .Lfunc_lep0: .localentry cstr, .Lfunc_lep0-.Lfunc_gep0 addis 3, 2, .L_MergedGlobals@toc@ha li 4, 4 addi 3, 3, .L_MergedGlobals@toc@l addi 3, 3, 4 blr .long 0 .quad 0 .Lfunc_end0: .size cstr, .Lfunc_end0-.Lfunc_begin0 .cfi_endproc .section .text.manual_cstr,"ax",`@progbits` .globl manual_cstr .p2align 4 .type manual_cstr,`@function` manual_cstr: .Lfunc_begin1: .cfi_startproc .Lfunc_gep1: addis 2, 12, .TOC.-.Lfunc_gep1@ha addi 2, 2, .TOC.-.Lfunc_gep1@l .Lfunc_lep1: .localentry manual_cstr, .Lfunc_lep1-.Lfunc_gep1 addis 3, 2, .L_MergedGlobals@toc@ha li 4, 4 addi 3, 3, .L_MergedGlobals@toc@l addi 3, 3, 8 blr .long 0 .quad 0 .Lfunc_end1: .size manual_cstr, .Lfunc_end1-.Lfunc_begin1 .cfi_endproc .type CSTR,`@object` .section .data.rel.ro.CSTR,"aw",`@progbits` .globl CSTR .p2align 3, 0x0 CSTR: .quad .L_MergedGlobals .size CSTR, 8 .type .L_MergedGlobals,`@object` .section .rodata..L_MergedGlobals,"a",`@progbits` .L_MergedGlobals: .asciz "foo" .asciz "bar" .asciz "baz" .size .L_MergedGlobals, 12 .set .Lanon.a643e9a6bba67b7953be2b5f96e0e802.0, .L_MergedGlobals .size .Lanon.a643e9a6bba67b7953be2b5f96e0e802.0, 4 .set .Lanon.a643e9a6bba67b7953be2b5f96e0e802.1, .L_MergedGlobals+4 .size .Lanon.a643e9a6bba67b7953be2b5f96e0e802.1, 4 .set .Lanon.a643e9a6bba67b7953be2b5f96e0e802.2, .L_MergedGlobals+8 .size .Lanon.a643e9a6bba67b7953be2b5f96e0e802.2, 4 .ident "rustc version 1.90.0-dev" .section ".note.GNU-stack","",`@progbits` ``` </details>
This was referenced Jul 20, 2025
bors added a commit that referenced this pull request Jul 20, 2025
Rollup of 9 pull requests Successful merges: - #143282 (Add `uX::strict_sub_signed`) - #143423 (address clippy formatting nits) - #143720 (Allow `Rvalue::Repeat` to return true in `rvalue_creates_operand` too) - #144011 (bootstrap: Don't trigger an unnecessary LLVM build from check builds) - #144112 (bootstrap: Ignore `rust.debuginfo-level-tests` for codegen tests) - #144125 (Add new `ignore-backends` and `needs-backends` tests annotations) - #144143 (Fix `-Ctarget-feature`s getting ignored after `crt-static`) - #144150 (tests: assembly: cstring-merging: Disable GlobalMerge pass) - #144190 (Give a message with a span on MIR validation error) r? `@ghost` `@rustbot` modify labels: rollup
rust-timer added a commit that referenced this pull request Jul 20, 2025
Rollup merge of #144150 - Gelbpunkt:globalmerge, r=Mark-Simulacrum tests: assembly: cstring-merging: Disable GlobalMerge pass The test relies on LLVM not merging all the globals into one and would currently otherwise fail on powerpc64le. See https://github.com/llvm/llvm-project/blob/release/20.x/llvm/lib/CodeGen/GlobalMerge.cpp and here's the assembly generated prior to disabling the pass: <details> <summary>Expand me</summary> ```asm .abiversion 2 .file "cstring_merging.5aa81ea7b99b31fe-cgu.0" .section .text.cstr,"ax",``@progbits`` .globl cstr .p2align 4 .type cstr,``@function`` cstr: .Lfunc_begin0: .cfi_startproc .Lfunc_gep0: addis 2, 12, .TOC.-.Lfunc_gep0@ha addi 2, 2, .TOC.-.Lfunc_gep0@l .Lfunc_lep0: .localentry cstr, .Lfunc_lep0-.Lfunc_gep0 addis 3, 2, .L_MergedGlobals@toc@ha li 4, 4 addi 3, 3, .L_MergedGlobals@toc@l addi 3, 3, 4 blr .long 0 .quad 0 .Lfunc_end0: .size cstr, .Lfunc_end0-.Lfunc_begin0 .cfi_endproc .section .text.manual_cstr,"ax",``@progbits`` .globl manual_cstr .p2align 4 .type manual_cstr,``@function`` manual_cstr: .Lfunc_begin1: .cfi_startproc .Lfunc_gep1: addis 2, 12, .TOC.-.Lfunc_gep1@ha addi 2, 2, .TOC.-.Lfunc_gep1@l .Lfunc_lep1: .localentry manual_cstr, .Lfunc_lep1-.Lfunc_gep1 addis 3, 2, .L_MergedGlobals@toc@ha li 4, 4 addi 3, 3, .L_MergedGlobals@toc@l addi 3, 3, 8 blr .long 0 .quad 0 .Lfunc_end1: .size manual_cstr, .Lfunc_end1-.Lfunc_begin1 .cfi_endproc .type CSTR,``@object`` .section .data.rel.ro.CSTR,"aw",``@progbits`` .globl CSTR .p2align 3, 0x0 CSTR: .quad .L_MergedGlobals .size CSTR, 8 .type .L_MergedGlobals,``@object`` .section .rodata..L_MergedGlobals,"a",``@progbits`` .L_MergedGlobals: .asciz "foo" .asciz "bar" .asciz "baz" .size .L_MergedGlobals, 12 .set .Lanon.a643e9a6bba67b7953be2b5f96e0e802.0, .L_MergedGlobals .size .Lanon.a643e9a6bba67b7953be2b5f96e0e802.0, 4 .set .Lanon.a643e9a6bba67b7953be2b5f96e0e802.1, .L_MergedGlobals+4 .size .Lanon.a643e9a6bba67b7953be2b5f96e0e802.1, 4 .set .Lanon.a643e9a6bba67b7953be2b5f96e0e802.2, .L_MergedGlobals+8 .size .Lanon.a643e9a6bba67b7953be2b5f96e0e802.2, 4 .ident "rustc version 1.90.0-dev" .section ".note.GNU-stack","",``@progbits`` ``` </details>
github-actions bot pushed a commit to rust-lang/rustc-dev-guide that referenced this pull request Jul 21, 2025
Rollup of 9 pull requests Successful merges: - rust-lang/rust#143282 (Add `uX::strict_sub_signed`) - rust-lang/rust#143423 (address clippy formatting nits) - rust-lang/rust#143720 (Allow `Rvalue::Repeat` to return true in `rvalue_creates_operand` too) - rust-lang/rust#144011 (bootstrap: Don't trigger an unnecessary LLVM build from check builds) - rust-lang/rust#144112 (bootstrap: Ignore `rust.debuginfo-level-tests` for codegen tests) - rust-lang/rust#144125 (Add new `ignore-backends` and `needs-backends` tests annotations) - rust-lang/rust#144143 (Fix `-Ctarget-feature`s getting ignored after `crt-static`) - rust-lang/rust#144150 (tests: assembly: cstring-merging: Disable GlobalMerge pass) - rust-lang/rust#144190 (Give a message with a span on MIR validation error) r? `@ghost` `@rustbot` modify labels: rollup
github-actions bot pushed a commit to rust-lang/miri that referenced this pull request Jul 21, 2025
Rollup of 9 pull requests Successful merges: - rust-lang/rust#143282 (Add `uX::strict_sub_signed`) - rust-lang/rust#143423 (address clippy formatting nits) - rust-lang/rust#143720 (Allow `Rvalue::Repeat` to return true in `rvalue_creates_operand` too) - rust-lang/rust#144011 (bootstrap: Don't trigger an unnecessary LLVM build from check builds) - rust-lang/rust#144112 (bootstrap: Ignore `rust.debuginfo-level-tests` for codegen tests) - rust-lang/rust#144125 (Add new `ignore-backends` and `needs-backends` tests annotations) - rust-lang/rust#144143 (Fix `-Ctarget-feature`s getting ignored after `crt-static`) - rust-lang/rust#144150 (tests: assembly: cstring-merging: Disable GlobalMerge pass) - rust-lang/rust#144190 (Give a message with a span on MIR validation error) r? `@ghost` `@rustbot` modify labels: rollup
Muscraft pushed a commit to Muscraft/rust that referenced this pull request Jul 21, 2025
…lacrum tests: assembly: cstring-merging: Disable GlobalMerge pass The test relies on LLVM not merging all the globals into one and would currently otherwise fail on powerpc64le. See https://github.com/llvm/llvm-project/blob/release/20.x/llvm/lib/CodeGen/GlobalMerge.cpp and here's the assembly generated prior to disabling the pass: <details> <summary>Expand me</summary> ```asm .abiversion 2 .file "cstring_merging.5aa81ea7b99b31fe-cgu.0" .section .text.cstr,"ax",``@progbits`` .globl cstr .p2align 4 .type cstr,``@function`` cstr: .Lfunc_begin0: .cfi_startproc .Lfunc_gep0: addis 2, 12, .TOC.-.Lfunc_gep0@ha addi 2, 2, .TOC.-.Lfunc_gep0@l .Lfunc_lep0: .localentry cstr, .Lfunc_lep0-.Lfunc_gep0 addis 3, 2, .L_MergedGlobals@toc@ha li 4, 4 addi 3, 3, .L_MergedGlobals@toc@l addi 3, 3, 4 blr .long 0 .quad 0 .Lfunc_end0: .size cstr, .Lfunc_end0-.Lfunc_begin0 .cfi_endproc .section .text.manual_cstr,"ax",``@progbits`` .globl manual_cstr .p2align 4 .type manual_cstr,``@function`` manual_cstr: .Lfunc_begin1: .cfi_startproc .Lfunc_gep1: addis 2, 12, .TOC.-.Lfunc_gep1@ha addi 2, 2, .TOC.-.Lfunc_gep1@l .Lfunc_lep1: .localentry manual_cstr, .Lfunc_lep1-.Lfunc_gep1 addis 3, 2, .L_MergedGlobals@toc@ha li 4, 4 addi 3, 3, .L_MergedGlobals@toc@l addi 3, 3, 8 blr .long 0 .quad 0 .Lfunc_end1: .size manual_cstr, .Lfunc_end1-.Lfunc_begin1 .cfi_endproc .type CSTR,``@object`` .section .data.rel.ro.CSTR,"aw",``@progbits`` .globl CSTR .p2align 3, 0x0 CSTR: .quad .L_MergedGlobals .size CSTR, 8 .type .L_MergedGlobals,``@object`` .section .rodata..L_MergedGlobals,"a",``@progbits`` .L_MergedGlobals: .asciz "foo" .asciz "bar" .asciz "baz" .size .L_MergedGlobals, 12 .set .Lanon.a643e9a6bba67b7953be2b5f96e0e802.0, .L_MergedGlobals .size .Lanon.a643e9a6bba67b7953be2b5f96e0e802.0, 4 .set .Lanon.a643e9a6bba67b7953be2b5f96e0e802.1, .L_MergedGlobals+4 .size .Lanon.a643e9a6bba67b7953be2b5f96e0e802.1, 4 .set .Lanon.a643e9a6bba67b7953be2b5f96e0e802.2, .L_MergedGlobals+8 .size .Lanon.a643e9a6bba67b7953be2b5f96e0e802.2, 4 .ident "rustc version 1.90.0-dev" .section ".note.GNU-stack","",``@progbits`` ``` </details>
Muscraft pushed a commit to Muscraft/rust that referenced this pull request Jul 21, 2025
…llaumeGomez Rollup of 9 pull requests Successful merges: - rust-lang#143282 (Add `uX::strict_sub_signed`) - rust-lang#143423 (address clippy formatting nits) - rust-lang#143720 (Allow `Rvalue::Repeat` to return true in `rvalue_creates_operand` too) - rust-lang#144011 (bootstrap: Don't trigger an unnecessary LLVM build from check builds) - rust-lang#144112 (bootstrap: Ignore `rust.debuginfo-level-tests` for codegen tests) - rust-lang#144125 (Add new `ignore-backends` and `needs-backends` tests annotations) - rust-lang#144143 (Fix `-Ctarget-feature`s getting ignored after `crt-static`) - rust-lang#144150 (tests: assembly: cstring-merging: Disable GlobalMerge pass) - rust-lang#144190 (Give a message with a span on MIR validation error) r? `@ghost` `@rustbot` modify labels: rollup
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
4 participants
Add this suggestion to a batch that can be applied as a single commit. This suggestion is invalid because no changes were made to the code. Suggestions cannot be applied while the pull request is closed. Suggestions cannot be applied while viewing a subset of changes. Only one suggestion per line can be applied in a batch. Add this suggestion to a batch that can be applied as a single commit. Applying suggestions on deleted lines is not supported. You must change the existing code in this line in order to create a valid suggestion. Outdated suggestions cannot be applied. This suggestion has been applied or marked resolved. Suggestions cannot be applied from pending reviews. Suggestions cannot be applied on multi-line comments. Suggestions cannot be applied while the pull request is queued to merge. Suggestion cannot be applied right now. Please check back later.
The test relies on LLVM not merging all the globals into one and would currently otherwise fail on powerpc64le.
See https://github.com/llvm/llvm-project/blob/release/20.x/llvm/lib/CodeGen/GlobalMerge.cpp and here's the assembly generated prior to disabling the pass:
Expand me