Issue 156022
Summary [PowerPC] compiling this file takes hours
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Reporter pkubaj
    Here's a preprocessed file which takes hours to build - I'm not sure how many, because I hit ^C before it finishes. It's not reduced, because if I e.g. time out at 1 minute, I get a reduced file that builds just about 1 minute - so the amount of code that causes the slowdown is reduced as well.

This happens on powerpc64le on FreeBSD 14.3-RELEASE with llvm-devel 22.0.d20250807_1.
Build the file with:
` clang-devel "-cc1" "-triple" "powerpc64le-unknown-freebsd14.3" "-emit-obj" "-disable-free" "-clear-ast-before-backend" "-disable-llvm-verifier" "-discard-value-names" "-main-file-name" "emu_inc_cipher_serpent.c" "-mrelocation-model" "pic" "-pic-level" "1" "-fhalf-no-semantic-interposition" "-mframe-pointer=none" "-relaxed-aliasing" "-ffp-contract=on" "-fno-rounding-math" "-mconstructor-aliases" "-funwind-tables=2" "-target-cpu" "ppc64le" "-mfloat-abi" "hard" "-target-abi" "elfv2" "-debugger-tuning=gdb" "-fdebug-compilation-dir=/wrkdirs/usr/ports/security/hashcat/work/hashcat-7.1.2" "-fcoverage-compilation-dir=/wrkdirs/usr/ports/security/hashcat/work/hashcat-7.1.2" "-D" "WITH_BRAIN" "-D" "LIBICONV_PLUG" "-D" "WITH_BRAIN" "-D" "WITH_CUBIN" "-O2" "-Wno-typedef-redefinition" "-std=gnu99" "-ferror-limit" "19" "-stack-protector" "2" "-fno-signed-char" "-fgnuc-version=4.2.1" "-fskip-odr-check-in-gmf" "-vectorize-loops" "-vectorize-slp" "-faddrsig" "-D__GCC_HAVE_DWARF2_CFI_ASM=1" "-x" "c" "emu_inc_cipher_serpent-2f211c.c"`

[emu_inc_cipher_serpent-2f211c.c](https://github.com/user-attachments/files/22047002/emu_inc_cipher_serpent-2f211c.c)
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