[Webkit-unassigned] [Bug 185708] New: Baseline op_jtrue emits an insane amount of code

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=185708

            Bug ID: 185708
           Summary: Baseline op_jtrue emits an insane amount of code
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: fpizlo at apple.com

This is too much:

    [  74] jtrue             loc11, 21(->95)
           0x7d2769f9871: mov -0x60(%rbp), %rax
           0x7d2769f9875: mov %rax, %rsi
           0x7d2769f9878: xor $0x6, %rsi
           0x7d2769f987c: test $0xfffffffffffffffe, %rsi
           0x7d2769f9883: jnz 0x7d2769f9899
           0x7d2769f9889: cmp $0x7, %eax
           0x7d2769f988c: setz %sil
           0x7d2769f9890: movzx %sil, %esi
           0x7d2769f9894: jmp 0x7d2769f994a
           0x7d2769f9899: test %rax, %r14
           0x7d2769f989c: jz 0x7d2769f98e1
           0x7d2769f98a2: cmp %r14, %rax
           0x7d2769f98a5: jb 0x7d2769f98ba
           0x7d2769f98ab: test %eax, %eax
           0x7d2769f98ad: setnz %sil
           0x7d2769f98b1: movzx %sil, %esi
           0x7d2769f98b5: jmp 0x7d2769f994a
           0x7d2769f98ba: lea (%r14,%rax), %rsi
           0x7d2769f98be: movq %rsi, %xmm0
           0x7d2769f98c3: xorps %xmm1, %xmm1
           0x7d2769f98c6: ucomisd %xmm1, %xmm0
           0x7d2769f98ca: jz 0x7d2769f98da
           0x7d2769f98d0: mov $0x1, %esi
           0x7d2769f98d5: jmp 0x7d2769f994a
           0x7d2769f98da: xor %esi, %esi
           0x7d2769f98dc: jmp 0x7d2769f994a
           0x7d2769f98e1: test %rax, %r15
           0x7d2769f98e4: jnz 0x7d2769f9948
           0x7d2769f98ea: cmp $0x1, 0x5(%rax)
           0x7d2769f98ee: jnz 0x7d2769f9906
           0x7d2769f98f4: mov 0x8(%rax), %esi
           0x7d2769f98f7: test %esi, %esi
           0x7d2769f98f9: setnz %sil
           0x7d2769f98fd: movzx %sil, %esi
           0x7d2769f9901: jmp 0x7d2769f994a
           0x7d2769f9906: test $0x1, 0x6(%rax)
           0x7d2769f990a: jz 0x7d2769f993e
           0x7d2769f9910: mov (%rax), %esi
           0x7d2769f9912: mov $0x10c5000e8, %rdx
           0x7d2769f991c: mov (%rdx), %rdx
           0x7d2769f991f: mov (%rdx,%rsi,8), %rsi
           0x7d2769f9923: mov $0x10c9dc000, %rdx
           0x7d2769f992d: cmp %rdx, 0x18(%rsi)
           0x7d2769f9931: jnz 0x7d2769f993e
           0x7d2769f9937: xor %esi, %esi
           0x7d2769f9939: jmp 0x7d2769f994a
           0x7d2769f993e: mov $0x1, %esi
           0x7d2769f9943: jmp 0x7d2769f994a
           0x7d2769f9948: xor %esi, %esi
           0x7d2769f994a: test %esi, %esi
           0x7d2769f994c: jnz 0x7d2769f99e6

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