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| I got this file by running: | |
| ❯ "inplace/bin/ghc-stage1" -optc-Wall -optc-Wextra -optc-Wstrict-prototypes -optc-Wmissing-prototypes -optc-Wmissing-declarations -optc-Winline -optc-Waggregate-return -optc-Wpointer-arith -optc-Wmissing-noreturn -optc-Wnested-externs -optc-Wredundant-decls -optc-Iincludes -optc-Iincludes/dist -optc-Iincludes/dist-derivedconstants/header -optc-Iincludes/dist-ghcconstants/header -optc-Irts -optc-Irts/dist/build -optc-DCOMPILING_RTS -optc-DDEBUG -optc-fno-strict-aliasing -optc-fno-common -optc-DUSE_DWARF -optc-O2 -optc-fomit-frame-pointer -optc-DRtsWay=\"rts_v\" -static -O -H64m -Iincludes -Iincludes/dist -Iincludes/dist-derivedconstants/header -Iincludes/dist-ghcconstants/header -Irts -Irts/dist/build -DCOMPILING_RTS -package-name rts -dcmm-lint -i -irts -irts/dist/build -irts/dist/build/autogen -Irts/dist/build -Irts/dist/build/autogen -O2 -g -c rts/sm/Scav.c -o rts/dist/build/sm/Scav.o | |
| and then I ran: | |
| objdump --source rts/dist/build/sm/Scav.o | less | |
| And manually pasted out these excerpts which are *exactly identical* | |
| 0000000000000970 <use_function>: | |
| 970: 41 56 push %r14 | |
| 972: 85 f6 test %esi,%esi | |
| 974: 41 89 f6 mov %esi,%r14d | |
| 977: 41 55 push %r13 | |
| 979: 49 89 fd mov %rdi,%r13 | |
| 97c: 41 54 push %r12 | |
| 97e: 55 push %rbp | |
| 97f: 53 push %rbx | |
| 980: 74 3c je 9be <use_function+0x4e> | |
| 982: 48 89 d3 mov %rdx,%rbx | |
| 985: 89 f5 mov %esi,%ebp | |
| 987: 49 89 fc mov %rdi,%r12 | |
| 98a: eb 10 jmp 99c <use_function+0x2c> | |
| 98c: 0f 1f 40 00 nopl 0x0(%rax) | |
| 990: 49 83 c4 08 add $0x8,%r12 | |
| 994: 48 d1 eb shr %rbx | |
| 997: 83 ed 01 sub $0x1,%ebp | |
| 99a: 74 19 je 9b5 <use_function+0x45> | |
| 99c: f6 c3 01 test $0x1,%bl | |
| 99f: 75 ef jne 990 <use_function+0x20> | |
| 9a1: 4c 89 e7 mov %r12,%rdi | |
| 9a4: 48 d1 eb shr %rbx | |
| 9a7: 49 83 c4 08 add $0x8,%r12 | |
| 9ab: e8 00 00 00 00 callq 9b0 <use_function+0x40> | |
| 9b0: 83 ed 01 sub $0x1,%ebp | |
| 9b3: 75 e7 jne 99c <use_function+0x2c> | |
| 9b5: 41 83 ee 01 sub $0x1,%r14d | |
| 9b9: 4f 8d 6c f5 08 lea 0x8(%r13,%r14,8),%r13 | |
| 9be: 5b pop %rbx | |
| 9bf: 5d pop %rbp | |
| 9c0: 41 5c pop %r12 | |
| 9c2: 4c 89 e8 mov %r13,%rax | |
| 9c5: 41 5d pop %r13 | |
| 9c7: 41 5e pop %r14 | |
| 9c9: c3 retq | |
| 9ca: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) | |
| 00000000000009d0 <explicit_inline>: | |
| 9d0: 41 56 push %r14 | |
| 9d2: 85 f6 test %esi,%esi | |
| 9d4: 41 89 f6 mov %esi,%r14d | |
| 9d7: 41 55 push %r13 | |
| 9d9: 49 89 fd mov %rdi,%r13 | |
| 9dc: 41 54 push %r12 | |
| 9de: 55 push %rbp | |
| 9df: 53 push %rbx | |
| 9e0: 74 3c je a1e <explicit_inline+0x4e> | |
| 9e2: 48 89 d3 mov %rdx,%rbx | |
| 9e5: 89 f5 mov %esi,%ebp | |
| 9e7: 49 89 fc mov %rdi,%r12 | |
| 9ea: eb 10 jmp 9fc <explicit_inline+0x2c> | |
| 9ec: 0f 1f 40 00 nopl 0x0(%rax) | |
| 9f0: 49 83 c4 08 add $0x8,%r12 | |
| 9f4: 48 d1 eb shr %rbx | |
| 9f7: 83 ed 01 sub $0x1,%ebp | |
| 9fa: 74 19 je a15 <explicit_inline+0x45> | |
| 9fc: f6 c3 01 test $0x1,%bl | |
| 9ff: 75 ef jne 9f0 <explicit_inline+0x20> | |
| a01: 4c 89 e7 mov %r12,%rdi | |
| a04: 48 d1 eb shr %rbx | |
| a07: 49 83 c4 08 add $0x8,%r12 | |
| a0b: e8 00 00 00 00 callq a10 <explicit_inline+0x40> | |
| a10: 83 ed 01 sub $0x1,%ebp | |
| a13: 75 e7 jne 9fc <explicit_inline+0x2c> | |
| a15: 41 83 ee 01 sub $0x1,%r14d | |
| a19: 4f 8d 6c f5 08 lea 0x8(%r13,%r14,8),%r13 | |
| a1e: 5b pop %rbx | |
| a1f: 5d pop %rbp | |
| a20: 41 5c pop %r12 | |
| a22: 4c 89 e8 mov %r13,%rax | |
| a25: 41 5d pop %r13 | |
| a27: 41 5e pop %r14 | |
| a29: c3 retq | |
| a2a: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) |
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| // This is parts of Scav.c | |
| STATIC_INLINE StgPtr | |
| scavenge_small_bitmap (StgPtr p, nat size, StgWord bitmap) | |
| { | |
| while (size > 0) { | |
| if ((bitmap & 1) == 0) { | |
| evacuate((StgClosure **)p); | |
| } | |
| p++; | |
| bitmap = bitmap >> 1; | |
| size--; | |
| } | |
| return p; | |
| } | |
| #if !(defined(THREADED_RTS) && !defined(PARALLEL_GC)) | |
| StgPtr | |
| use_function (StgPtr p, nat size, StgWord bitmap); | |
| StgPtr | |
| use_function (StgPtr p, nat size, StgWord bitmap) | |
| { | |
| p = scavenge_small_bitmap(p, size, bitmap); | |
| return p; | |
| } | |
| StgPtr | |
| explicit_inline (StgPtr p, nat size, StgWord bitmap); | |
| StgPtr | |
| explicit_inline (StgPtr p, nat size, StgWord bitmap) | |
| { | |
| while (size > 0) { | |
| if ((bitmap & 1) == 0) { | |
| evacuate((StgClosure **)p); | |
| } | |
| p++; | |
| bitmap = bitmap >> 1; | |
| size--; | |
| } | |
| return p; | |
| } |
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