[llvm-bugs] [Bug 34862] New: clang crashes compiling "volatile long double resld = __builtin_canonicalizel(LD)"

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=34862

            Bug ID: 34862
           Summary: clang crashes compiling "volatile long double resld =
                    __builtin_canonicalizel(LD)"
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: X86
          Assignee: unassignedbugs at nondot.org
          Reporter: ahatanak at gmail.com
                CC: llvm-bugs at lists.llvm.org

clang crashes when compiling the following code:

$ cat canon-crash.c
void test_float_builtin_ops(long double LD) {
  volatile long double resld = __builtin_canonicalizel(LD);
}

$ clang canon-crash.c  -Os -o -  -S

fatal error: error in backend: Cannot select: t7: f80 = fcanonicalize t3
  t3: f80,ch = load<LD10[FixedStack-1](align=16)> t0, FrameIndex:i64<-1>,
undef:i64
    t1: i64 = FrameIndex<-1>
    t2: i64 = undef
In function: test_float_builtin_ops

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