| Summary: | [9 Regression] ICE in curr_insn_transform, at lra-constraints.c:3962 | ||
|---|---|---|---|
| Product: | gcc | Reporter: | Peter Wang <novalazy> |
| Component: | rtl-optimization | Assignee: | Not yet assigned to anyone <unassigned> |
| Status: | RESOLVED DUPLICATE | ||
| Severity: | normal | CC: | vmakarov |
| Priority: | P3 | Keywords: | ice-on-valid-code, ra |
| Version: | 9.1.0 | ||
| Target Milestone: | 9.5 | ||
| Host: | Target: | x86_64-*-* | |
| Build: | Known to work: | 10.0 | |
| Known to fail: | Last reconfirmed: | 2019-08-13 00:00:00 | |
(In reply to Martin Liška from comment #1) > Fixed on trunk with r273357, thus probably a dup of PR91102. > Vladimir? Yes, it is definitely a dup. |
Hi, the following test case hits an ICE in gcc 9.1.0 on x86_64. % cat test.c register unsigned long a __asm__("r14"); register unsigned long b __asm__("r15"); void test(void) { b = a << 4; } % gcc -O1 -c test.c test.c: In function 'test': test.c:7:1: error: unable to generate reloads for: 7 | } | ^ (insn 6 5 9 2 (parallel [ (set (reg/v:DI 43 r15 [ b ]) (ashift:DI (reg/v:DI 42 r14 [ a ]) (const_int 4 [0x4]))) (clobber (reg:CC 17 flags)) ]) "test.c":6:11 520 {*ashldi3_1} (expr_list:REG_UNUSED (reg:CC 17 flags) (nil))) during RTL pass: reload test.c:7:1: internal compiler error: in curr_insn_transform, at lra-constraints.c:3962 % gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/9.1.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /build/gcc/src/gcc/configure --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/ --enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared --enable-threads=posix --with-system-zlib --with-isl --enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object --enable-linker-build-id --enable-lto --enable-plugin --enable-install-libiberty --with-linker-hash-style=gnu --enable-gnu-indirect-function --enable-multilib --disable-werror --enable-checking=release --enable-default-pie --enable-default-ssp --enable-cet=auto Thread model: posix gcc version 9.1.0 (GCC)