More Code Generation, Part 2 | Bitwise Episode Guide

0:19Run it to find that it remains slower than before, and continue to investigate why

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0:19Run it to find that it remains slower than before, and continue to investigate why

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0:19Run it to find that it remains slower than before, and continue to investigate why

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2:28badflydog You enabled type checking, also check if you're in debug

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2:28badflydog You enabled type checking, also check if you're in debug

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2:28badflydog You enabled type checking, also check if you're in debug

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2:44Regenerate test3.ion and run Ion on it

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2:44Regenerate test3.ion and run Ion on it

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2:44Regenerate test3.ion and run Ion on it

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3:24praet_a51 Would capturing samples account for the drop in performance?

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3:24praet_a51 Would capturing samples account for the drop in performance?

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3:24praet_a51 Would capturing samples account for the drop in performance?

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3:33Note that our total CPU time is lower

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3:33Note that our total CPU time is lower

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3:33Note that our total CPU time is lower

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4:05Consult our diff with the committed code, noting that the hash function has changed

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4:05Consult our diff with the committed code, noting that the hash function has changed

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4:05Consult our diff with the committed code, noting that the hash function has changed

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5:28Forget about the performance regression for now, and determine to emit #line directives¹ respecting the #include directive, to enable line-level debugging

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5:28Forget about the performance regression for now, and determine to emit #line directives¹ respecting the #include directive, to enable line-level debugging

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5:28Forget about the performance regression for now, and determine to emit #line directives¹ respecting the #include directive, to enable line-level debugging

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9:03Enable gen_stmt() to emit #line directives

10:40Run it to see what that does to our test file

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10:40Run it to see what that does to our test file

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10:40Run it to see what that does to our test file

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11:24Rename SrcLoc, curr_loc and prev_loc to SrcPos, curr_pos and prev_pos

15:30Make most all of the decl_*(), expr_*(), stmt_*() and typespec_*() functions take a SrcPos

21:31Add a SrcPos pos to the Token, CompoundField and StmtList structs for all the parse*() functions to use

38:59Run it to see how much stuff got screwed up (spoiler: none)

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38:59Run it to see how much stuff got screwed up (spoiler: none)

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38:59Run it to see how much stuff got screwed up (spoiler: none)

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40:27Introduce genpos() to perform our own line tracking and avoid inserting unnecessary #line directives

44:03Run it and compare the line numbering of our Ion and generated C code

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44:03Run it and compare the line numbering of our Ion and generated C code

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44:03Run it and compare the line numbering of our Ion and generated C code

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45:50Introduce a Sym **global_syms_list for finalize_syms() to use rather than a Map global_syms_map (renamed from global_syms) array

48:42Run it to see that it generates consistent, if reordered, code

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48:42Run it to see that it generates consistent, if reordered, code

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48:42Run it to see that it generates consistent, if reordered, code

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49:34Rename global_syms_list to global_syms_buf

49:52Run it to confirm it still works

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49:52Run it to confirm it still works

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49:52Run it to confirm it still works

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50:00Recap the day's work

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50:00Recap the day's work

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50:00Recap the day's work

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51:31Q&A

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51:31Q&A

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51:31Q&A

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52:01pmttavara You can use the code-aware rename tool (Ctrl-R-R) to change the name of the member of a data structure and VS will rename all references

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52:01pmttavara You can use the code-aware rename tool (Ctrl-R-R) to change the name of the member of a data structure and VS will rename all references

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52:01pmttavara You can use the code-aware rename tool (Ctrl-R-R) to change the name of the member of a data structure and VS will rename all references

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52:38badflydog pervognsen Will we generate a main directly or generate a main wrapper?

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52:38badflydog pervognsen Will we generate a main directly or generate a main wrapper?

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52:38badflydog pervognsen Will we generate a main directly or generate a main wrapper?

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53:04Add a func main in test1.ion, and some stock preamble code in gen.c

55:10Add support for extern functions, introducing sym_global_func() for init_global_syms to call on "putchar"

59:15Add a putc() call in test1.ion

59:34Run it and crash in resolve_func_body()

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59:34Run it and crash in resolve_func_body()

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59:34Run it and crash in resolve_func_body()

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1:00:09Fix finalize_syms() to only call finalize_sym() if(sym->decl), resolve_stmt() to handle the STMT_EXPR case, and test1.ion to call putchar()

1:01:57Run it to find that it worked

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1:01:57Run it to find that it worked

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1:01:57Run it to find that it worked

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1:02:16Pass "puts" to the sym_global_func() call in init_global_syms(), changing test1.ion to call puts() on "Hello, world!"

1:03:20Compile and run Ion on test1.ion, to see our "Hello, world!"

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1:03:20Compile and run Ion on test1.ion, to see our "Hello, world!"

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1:03:20Compile and run Ion on test1.ion, to see our "Hello, world!"

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1:04:00pmttavara pervognsen Shouldn't you be able to right-click on the menu bar and enable the "Standard" view for quick switching between release and debug?

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1:04:00pmttavara pervognsen Shouldn't you be able to right-click on the menu bar and enable the "Standard" view for quick switching between release and debug?

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1:04:00pmttavara pervognsen Shouldn't you be able to right-click on the menu bar and enable the "Standard" view for quick switching between release and debug?

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1:04:18Setup a new test_project project using our generated test1.c

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1:04:18Setup a new test_project project using our generated test1.c

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1:04:18Setup a new test_project project using our generated test1.c

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1:06:46Run it and try breaking in to our source test1.ion

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1:06:46Run it and try breaking in to our source test1.ion

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1:06:46Run it and try breaking in to our source test1.ion

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1:07:42Recap the steps to get this line-stepping to work

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1:07:42Recap the steps to get this line-stepping to work

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1:07:42Recap the steps to get this line-stepping to work

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1:09:05Declare b as the result of example_test()

1:09:33Break on that declaration, and inspect the asm

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1:09:33Break on that declaration, and inspect the asm

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1:09:33Break on that declaration, and inspect the asm

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1:10:03heasummn pervognsen Use the factorial?

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1:10:03heasummn pervognsen Use the factorial?

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1:10:03heasummn pervognsen Use the factorial?

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1:10:10Step in to that declaration of b, to see that it goes to the generated C code of example_test()

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1:10:10Step in to that declaration of b, to see that it goes to the generated C code of example_test()

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1:10:10Step in to that declaration of b, to see that it goes to the generated C code of example_test()

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1:11:22Enable gen_func() to generate #line directives for declarations, renaming genpos() to gen_pos()

1:12:03Run it, inspect the C file, and try successfully to step in to our example_test() call in the declaration of b

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1:12:03Run it, inspect the C file, and try successfully to step in to our example_test() call in the declaration of b

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1:12:03Run it, inspect the C file, and try successfully to step in to our example_test() call in the declaration of b

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1:13:15pmttavara It seems like you ought to just print a #line statement on every line...

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1:13:15pmttavara It seems like you ought to just print a #line statement on every line...

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1:13:15pmttavara It seems like you ought to just print a #line statement on every line...

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1:14:27barubro Q: Does Ion support #define?

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1:14:27barubro Q: Does Ion support #define?

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1:14:27barubro Q: Does Ion support #define?

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1:15:20Step through our Ion code, enjoying it but lamenting the fact that we can't hover over stuff

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1:15:20Step through our Ion code, enjoying it but lamenting the fact that we can't hover over stuff

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1:15:20Step through our Ion code, enjoying it but lamenting the fact that we can't hover over stuff

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1:16:25Turn off the stream

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1:16:25Turn off the stream

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1:16:25Turn off the stream

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