[llvm-bugs] [Bug 33613] New: Instruction does not dominate all uses on x86-64 while compiling 511.povray_r from SPEC CPU 2017

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=33613

            Bug ID: 33613
           Summary: Instruction does not dominate all uses on x86-64 while
                    compiling 511.povray_r from SPEC CPU 2017
           Product: new-bugs
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: regehr at cs.utah.edu
                CC: llvm-bugs at lists.llvm.org

regehr at john-home:~/reduce$ clang++ -v
clang version 5.0.0 (trunk 306414)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/regehr/llvm-install/bin
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/5
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/5.4.0
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/6
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/6.0.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8.5
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9.3
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5.4.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6.0.0
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5.4.0
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64
Found CUDA installation: /usr/local/cuda, version 8.0
regehr at john-home:~/reduce$ cat small.cpp
typedef struct { double a[15]; } b;
b *c;
int d, e;
void g() {
  b h;
  int a;
  double f, i;
  for (; c <= &h; c++) {
    f = c->a[d];
    if (i * f)
      a++;
    i = f;
  }
  e = a;
}
regehr at john-home:~/reduce$ clang++ -c -O -march=native small.cpp
Instruction does not dominate all uses!
  %74 = insertelement <4 x double> %73, double %42, i32 3
  %59 = shufflevector <4 x double> %vector.recur, <4 x double> %74, <4 x i32>
<i32 3, i32 4, i32 5, i32 6>
Instruction does not dominate all uses!
  %74 = insertelement <4 x double> %73, double %42, i32 3
  %60 = shufflevector <4 x double> %74, <4 x double> %70, <4 x i32> <i32 3, i32
4, i32 5, i32 6>
Instruction does not dominate all uses!
  %70 = insertelement <4 x double> %69, double %46, i32 3
  %60 = shufflevector <4 x double> %74, <4 x double> %70, <4 x i32> <i32 3, i32
4, i32 5, i32 6>
Instruction does not dominate all uses!
  %70 = insertelement <4 x double> %69, double %46, i32 3
  %61 = shufflevector <4 x double> %70, <4 x double> %66, <4 x i32> <i32 3, i32
4, i32 5, i32 6>
Instruction does not dominate all uses!
  %66 = insertelement <4 x double> %65, double %50, i32 3
  %61 = shufflevector <4 x double> %70, <4 x double> %66, <4 x i32> <i32 3, i32
4, i32 5, i32 6>
Instruction does not dominate all uses!
  %66 = insertelement <4 x double> %65, double %50, i32 3
  %62 = shufflevector <4 x double> %66, <4 x double> %58, <4 x i32> <i32 3, i32
4, i32 5, i32 6>
fatal error: error in backend: Broken function found, compilation aborted!
clang-5.0: error: clang frontend command failed with exit code 70 (use -v to
see invocation)
clang version 5.0.0 (trunk 306414)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/regehr/llvm-install/bin
clang-5.0: note: diagnostic msg: PLEASE submit a bug report to
http://llvm.org/bugs/ and include the crash backtrace, preprocessed source, and
associated run script.
clang-5.0: note: diagnostic msg: 
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-5.0: note: diagnostic msg: /tmp/small-fc3c0d.cpp
clang-5.0: note: diagnostic msg: /tmp/small-fc3c0d.sh
clang-5.0: note: diagnostic msg: 

********************
regehr at john-home:~/reduce$

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