[LLVMbugs] [Bug 23591] New: [AArch64] llc crashes with assertion "Illegal shifted immedate value!" on AArch64.

[bugzilla-daemon at llvm.org]

https://llvm.org/bugs/show_bug.cgi?id=23591

            Bug ID: 23591
           Summary: [AArch64] llc crashes with assertion "Illegal shifted
                    immedate value!" on AArch64.
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: kevinqindev at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

$cat test.ll

define i64 @test(i64 %h, i64 %l, i64 %d) {
entry:
  %h.addr = alloca i64, align 8
  %l.addr = alloca i64, align 8
  %d.addr = alloca i64, align 8
  store i64 %h, i64* %h.addr, align 8
  store i64 %l, i64* %l.addr, align 8
  store i64 %d, i64* %d.addr, align 8
  %0 = load i64, i64* %h.addr, align 8
  %shl = shl i64 %0, 64
  %1 = load i64, i64* %l.addr, align 8
  %or = or i64 %shl, %1
  %2 = load i64, i64* %d.addr, align 8
  %div = udiv i64 %or, %2
  ret i64 %div
}

$llc small.ll -O0 -o small.o -mtriple aarch64
llc:
/home/kevin/llvm_trunk/llvm/lib/Target/AArch64/MCTargetDesc/AArch64AddressingModes.h:100:
unsigned int llvm::AArch64_AM::getShifterImm(AArch64_AM::ShiftExtendType,
unsigned int): Assertion `(Imm & 0x3f) == Imm && "Illegal shifted immedate
value!"' failed.



The equivalent C is,

$cat test.c

unsigned long test(unsigned long h, unsigned long l, unsigned long d)
 {
 return((unsigned long)(((((unsigned long long)h)<<64)|l)/(unsigned long
long)d));
 }

$clang -target aarch64-linux-gnu -O0 small.c -S
clang-3.7:
/home/kevin/llvm_trunk/llvm/lib/Target/AArch64/MCTargetDesc/AArch64AddressingModes.h:100:
unsigned int llvm::AArch64_AM::getShifterImm(AArch64_AM::ShiftExtendType,
unsigned int): Assertion `(Imm & 0x3f) == Imm && "Illegal shifted immedate
value!"' failed.

-- 
You are receiving this mail because:
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-bugs/attachments/20150520/e8755806/attachment.html>