search for: lfb8

...ll __Z3bazv LEHE0: . . . GCC_except_table0: LLSDA8: .byte 0xff # @LPStart format (omit) .byte 0x9b # @TType format (indirect pcrel sdata4) .byte 0x25 # uleb128 0x25; @TType base offset .byte 0x3 # call-site format (udata4) .byte 0x1a # uleb128 0x1a; Call-site table length .set L$set$0,LEHB0-LFB8 .long L$set$0 # region 0 start .set L$set$1,LEHE0-LEHB0 .long L$set$1 # length .set L$set$2,L6-LFB8 .long L$set$2 # landing pad .byte 0x1 # uleb128 0x1; action .set L$set$3,LEHB1-LFB8 .long L$set$3 # region 1 start .set L$set$4,LEHE1-LEHB1 .long L$set$4 # length .long 0x0 # landing pad...

...); } $ gcc -std=c99 -O3 -S x.c -o x.gcc.s $ llvm-gcc -std=c99 -O3 -S x.c -o x.llvm.s x.gcc.s: x: .LFB7: movl $1, %eax ucomisd %xmm0, %xmm0 jne .L5 jp .L5 xorl %eax, %eax ucomisd %xmm1, %xmm1 setp %al .L5: rep ; ret .LFE7: .size x, .-x .p2align 4,,15 .globl xx .type xx, @function xx: .LFB8: xorl %eax, %eax ucomisd %xmm1, %xmm0 setp %al ret x.llvm.s: x: pxor %xmm2, %xmm2 ucomisd %xmm2, %xmm0 setp %al ucomisd %xmm2, %xmm1 setp %cl orb %al, %cl movzbl %cl, %eax ret .size x, .-x .align 16 .globl xx .type xx, at function xx: ucomisd %xmm1, %xmm0 setp %al movzbl %al,...

Bill, ooops, yes, I described the meaning of "throw(A)" backwards, but I still think my example shows why you cannot merge LandingpadInst while inlining because multiple filter-lists on a LandingpadInst don't make sense. Perhaps I'm reading your original spec wrong, perhaps I'm mis-reading Duncan's emails, but I read them to mean that your syntax supports

....gcc.s: > x: > .LFB7: > movl $1, %eax > ucomisd %xmm0, %xmm0 > jne .L5 > jp .L5 > xorl %eax, %eax > ucomisd %xmm1, %xmm1 > setp %al > .L5: > rep ; ret > .LFE7: > .size x, .-x > .p2align 4,,15 > .globl xx > .type xx, @function > xx: > .LFB8: > xorl %eax, %eax > ucomisd %xmm1, %xmm0 > setp %al > ret > > x.llvm.s: > x: > pxor %xmm2, %xmm2 > ucomisd %xmm2, %xmm0 > setp %al > ucomisd %xmm2, %xmm1 > setp %cl > orb %al, %cl > movzbl %cl, %eax > ret > .size x, .-x > > > ....