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Precise and noContraction propagation

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Reimplement the whole workflow to make that: precise'ness of struct
    members won't spread to other non-precise members of the same struct
    instance.

    Approach:
    1. Build the map from symbols to their defining nodes. And for each
    object node (StructIndex, DirectIndex, Symbol nodes, etc), generates an
    accesschain path. Different AST nodes that indicating a same object
    should have the same accesschain path.

    2. Along the building phase in step 1, collect the initial set of
    'precise' (AST qualifier: 'noContraction') objects' accesschain paths.

    3. Start with the initial set of 'precise' accesschain paths, use it as
    a worklist, do as the following steps until the worklist is empty:

        1) Pop an accesschain path from worklist.
        2) Get the symbol part from the accesschain path.
        3) Find the defining nodes of that symbol.
        4) For each defining node, check whether it is defining a 'precise'
        object, or its assignee has nested 'precise' object. Get the
        incremental path from assignee to its nested 'precise' object (if
        any).
        5) Traverse the right side of the defining node, obtain the
        accesschain paths of the corresponding involved 'precise' objects.
        Update the worklist with those new objects' accesschain paths.
        Label involved operations with 'noContraction'.

    In each step, whenever we find the parent object of an nested object is
    'precise' (has 'noContraction' qualifier), we let the nested object
    inherit the 'precise'ness from its parent object.
This commit is contained in:
qining 2016-05-04 17:34:38 -04:00
parent d3d3ce7160
commit 9220dbb078
15 changed files with 3307 additions and 1 deletions
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precise.tesc
Warning, version 450 is not yet complete; most version-specific features are present, but some are missing.
Shader version: 450
Requested GL_EXT_gpu_shader5
Requested GL_EXT_shader_io_blocks
Requested GL_EXT_tessellation_shader
vertices = -1
0:? Sequence
0:5 Function Definition: minimal( (global float)
0:5 Function Parameters:
0:6 Sequence
0:6 Sequence
0:6 move second child to first child (temp float)
0:6 'result' (noContraction temp float)
0:6 Constant:
0:6 5.000000
0:7 Sequence
0:7 move second child to first child (temp float)
0:7 'a' (noContraction temp float)
0:7 Constant:
0:7 10.000000
0:8 Sequence
0:8 move second child to first child (temp float)
0:8 'b' (noContraction temp float)
0:8 Constant:
0:8 20.000000
0:9 Sequence
0:9 move second child to first child (temp float)
0:9 'c' (noContraction temp float)
0:9 Constant:
0:9 30.000000
0:10 Sequence
0:10 move second child to first child (temp float)
0:10 'd' (noContraction temp float)
0:10 Constant:
0:10 40.000000
0:11 move second child to first child (temp float)
0:11 'result' (noContraction temp float)
0:11 add (noContraction temp float)
0:11 component-wise multiply (noContraction temp float)
0:11 'a' (noContraction temp float)
0:11 'b' (noContraction temp float)
0:11 component-wise multiply (noContraction temp float)
0:11 'c' (noContraction temp float)
0:11 'd' (noContraction temp float)
0:12 Branch: Return with expression
0:12 'result' (noContraction temp float)
0:15 Function Definition: continuous_assignment( (global void)
0:15 Function Parameters:
0:16 Sequence
0:16 Sequence
0:16 move second child to first child (temp float)
0:16 'result' (noContraction temp float)
0:16 Constant:
0:16 5.000000
0:17 Sequence
0:17 move second child to first child (temp int)
0:17 'a' (noContraction temp int)
0:17 Constant:
0:17 10 (const int)
0:18 Sequence
0:18 move second child to first child (temp int)
0:18 'b' (noContraction temp int)
0:18 Constant:
0:18 20 (const int)
0:19 move second child to first child (temp float)
0:19 'result' (noContraction temp float)
0:19 Convert int to float (temp float)
0:19 move second child to first child (temp int)
0:19 'a' (noContraction temp int)
0:19 add (noContraction temp int)
0:19 'b' (noContraction temp int)
0:19 Constant:
0:19 4 (const int)
0:22 Function Definition: convert( (global void)
0:22 Function Parameters:
0:? Sequence
0:24 Sequence
0:24 move second child to first child (temp int)
0:24 'a' (noContraction temp int)
0:24 Constant:
0:24 10 (const int)
0:25 Sequence
0:25 move second child to first child (temp int)
0:25 'b' (noContraction temp int)
0:25 Constant:
0:25 20 (const int)
0:26 move second child to first child (temp int)
0:26 'b' (noContraction temp int)
0:26 add (noContraction temp int)
0:26 'a' (noContraction temp int)
0:26 'b' (noContraction temp int)
0:27 move second child to first child (temp float)
0:27 'result' (noContraction temp float)
0:27 Convert int to float (temp float)
0:27 'b' (noContraction temp int)
0:30 Function Definition: loop_for( (global float)
0:30 Function Parameters:
0:31 Sequence
0:31 Sequence
0:31 move second child to first child (temp float)
0:31 'r1' (noContraction temp float)
0:31 Constant:
0:31 5.000000
0:32 Sequence
0:32 move second child to first child (temp float)
0:32 'r2' (noContraction temp float)
0:32 Constant:
0:32 10.000000
0:33 Sequence
0:33 move second child to first child (temp int)
0:33 'a' (temp int)
0:33 Constant:
0:33 10 (const int)
0:34 Sequence
0:34 move second child to first child (temp int)
0:34 'b' (noContraction temp int)
0:34 Constant:
0:34 20 (const int)
0:35 Sequence
0:35 move second child to first child (temp int)
0:35 'c' (noContraction temp int)
0:35 Constant:
0:35 30 (const int)
0:36 Sequence
0:36 Sequence
0:36 move second child to first child (temp int)
0:36 'i' (noContraction temp int)
0:36 Constant:
0:36 0 (const int)
0:36 Loop with condition tested first
0:36 Loop Condition
0:36 Compare Less Than (temp bool)
0:36 'i' (temp int)
0:36 'a' (temp int)
0:36 Loop Body
0:37 Sequence
0:37 add second child into first child (noContraction temp float)
0:37 'r1' (noContraction temp float)
0:37 add (noContraction temp float)
0:37 add (noContraction temp float)
0:37 Constant:
0:37 3.120000
0:37 Convert int to float (temp float)
0:37 'b' (noContraction temp int)
0:37 Convert int to float (temp float)
0:37 'i' (noContraction temp int)
0:38 add second child into first child (noContraction temp int)
0:38 'c' (noContraction temp int)
0:38 Constant:
0:38 1 (const int)
0:36 Loop Terminal Expression
0:36 Post-Increment (noContraction temp int)
0:36 'i' (noContraction temp int)
0:40 add second child into first child (temp int)
0:40 'a' (temp int)
0:40 Constant:
0:40 1 (const int)
0:41 move second child to first child (temp float)
0:41 'r2' (noContraction temp float)
0:41 Convert int to float (temp float)
0:41 'c' (noContraction temp int)
0:42 Branch: Return with expression
0:42 Construct float (temp float)
0:42 add (temp float)
0:42 'r1' (noContraction temp float)
0:42 'r2' (noContraction temp float)
0:45 Function Definition: loop_array( (global void)
0:45 Function Parameters:
0:46 Sequence
0:46 Sequence
0:46 move second child to first child (temp int)
0:46 'result' (noContraction temp int)
0:46 Constant:
0:46 5 (const int)
0:48 Sequence
0:48 move second child to first child (temp int)
0:48 'x' (noContraction temp int)
0:48 Constant:
0:48 22 (const int)
0:49 Sequence
0:49 move second child to first child (temp int)
0:49 'y' (noContraction temp int)
0:49 Constant:
0:49 33 (const int)
0:52 add second child into first child (noContraction temp int)
0:52 'result' (noContraction temp int)
0:52 add (noContraction temp int)
0:52 'x' (noContraction temp int)
0:52 'y' (noContraction temp int)
0:54 Sequence
0:54 Sequence
0:54 move second child to first child (temp int)
0:54 'i' (temp int)
0:54 Constant:
0:54 0 (const int)
0:54 Loop with condition tested first
0:54 Loop Condition
0:54 Compare Less Than (temp bool)
0:54 'i' (temp int)
0:54 Constant:
0:54 3 (const int)
0:54 Loop Body
0:56 Sequence
0:56 add second child into first child (noContraction temp int)
0:56 'result' (noContraction temp int)
0:56 add (noContraction temp int)
0:56 indirect index (noContraction temp int)
0:56 'a0' (temp 3-element array of int)
0:56 'i' (temp int)
0:56 Constant:
0:56 2 (const int)
0:58 move second child to first child (temp int)
0:58 indirect index (noContraction temp int)
0:58 'a0' (noContraction temp 3-element array of int)
0:58 'i' (temp int)
0:58 subtract (noContraction temp int)
0:58 Constant:
0:58 3 (const int)
0:58 Post-Increment (noContraction temp int)
0:58 'result' (noContraction temp int)
0:54 Loop Terminal Expression
0:54 Pre-Increment (temp int)
0:54 'i' (temp int)
0:62 Function Definition: loop_while( (global void)
0:62 Function Parameters:
0:63 Sequence
0:63 Sequence
0:63 move second child to first child (temp float)
0:63 'result' (noContraction temp float)
0:63 Constant:
0:63 5.000000
0:64 Sequence
0:64 move second child to first child (temp int)
0:64 'a' (noContraction temp int)
0:64 Constant:
0:64 10 (const int)
0:65 Sequence
0:65 move second child to first child (temp int)
0:65 'b' (noContraction temp int)
0:65 Constant:
0:65 20 (const int)
0:66 Loop with condition tested first
0:66 Loop Condition
0:66 Compare Less Than (temp bool)
0:66 'result' (noContraction temp float)
0:66 Constant:
0:66 10.000000
0:66 Loop Body
0:67 Sequence
0:67 add second child into first child (noContraction temp float)
0:67 'result' (noContraction temp float)
0:67 add (noContraction temp float)
0:67 Constant:
0:67 3.120000
0:67 Convert int to float (temp float)
0:67 'b' (noContraction temp int)
0:69 move second child to first child (temp float)
0:69 'result' (noContraction temp float)
0:69 Convert int to float (temp float)
0:69 add (noContraction temp int)
0:69 add (noContraction temp int)
0:69 'a' (noContraction temp int)
0:69 'b' (noContraction temp int)
0:69 Constant:
0:69 5 (const int)
0:70 move second child to first child (temp float)
0:70 'result' (noContraction temp float)
0:70 Constant:
0:70 11.100000
0:73 Function Definition: fma_not_decorated( (global float)
0:73 Function Parameters:
0:? Sequence
0:75 Sequence
0:75 move second child to first child (temp float)
0:75 'a' (noContraction temp float)
0:75 Constant:
0:75 1.000000
0:76 Sequence
0:76 move second child to first child (temp float)
0:76 'b' (noContraction temp float)
0:76 Constant:
0:76 2.000000
0:77 Sequence
0:77 move second child to first child (temp float)
0:77 'c' (noContraction temp float)
0:77 Constant:
0:77 3.000000
0:78 move second child to first child (temp float)
0:78 'b' (noContraction temp float)
0:78 add (noContraction temp float)
0:78 'b' (noContraction temp float)
0:78 'c' (noContraction temp float)
0:79 move second child to first child (temp float)
0:79 'result' (noContraction temp float)
0:79 fma (global float)
0:79 'a' (noContraction temp float)
0:79 'b' (noContraction temp float)
0:79 'c' (noContraction temp float)
0:80 Branch: Return with expression
0:80 'result' (noContraction temp float)
0:83 Function Definition: precise_return_exp_func( (noContraction temp float)
0:83 Function Parameters:
0:84 Sequence
0:84 Sequence
0:84 move second child to first child (temp float)
0:84 'a' (noContraction temp float)
0:84 Constant:
0:84 1.000000
0:85 Sequence
0:85 move second child to first child (temp float)
0:85 'b' (noContraction temp float)
0:85 Constant:
0:85 2.000000
0:86 Branch: Return with expression
0:86 add (noContraction temp float)
0:86 'a' (noContraction temp float)
0:86 'b' (noContraction temp float)
0:89 Function Definition: precise_return_val_func( (noContraction temp float)
0:89 Function Parameters:
0:90 Sequence
0:90 Sequence
0:90 move second child to first child (temp float)
0:90 'a' (noContraction temp float)
0:90 Constant:
0:90 1.000000
0:91 Sequence
0:91 move second child to first child (temp float)
0:91 'b' (noContraction temp float)
0:91 Constant:
0:91 2.000000
0:92 Sequence
0:92 move second child to first child (temp float)
0:92 'result' (noContraction temp float)
0:92 add (noContraction temp float)
0:92 'a' (noContraction temp float)
0:92 'b' (noContraction temp float)
0:93 Branch: Return with expression
0:93 'result' (noContraction temp float)
0:96 Function Definition: precise_func_parameter(f1;f1; (global float)
0:96 Function Parameters:
0:96 'b' (in float)
0:96 'c' (out float)
0:97 Sequence
0:97 Sequence
0:97 move second child to first child (temp float)
0:97 'a' (temp float)
0:97 Constant:
0:97 0.500000
0:98 move second child to first child (temp float)
0:98 'c' (out float)
0:98 add (temp float)
0:98 'a' (temp float)
0:98 'b' (in float)
0:99 Branch: Return with expression
0:99 subtract (temp float)
0:99 'a' (temp float)
0:99 'b' (in float)
0:102 Function Definition: main( (global void)
0:102 Function Parameters:
0:? Linker Objects
Linked tessellation control stage:
ERROR: Linking tessellation control stage: At least one shader must specify an output layout(vertices=...)
Shader version: 450
Requested GL_EXT_gpu_shader5
Requested GL_EXT_shader_io_blocks
Requested GL_EXT_tessellation_shader
vertices = -1
0:? Sequence
0:5 Function Definition: minimal( (global float)
0:5 Function Parameters:
0:6 Sequence
0:6 Sequence
0:6 move second child to first child (temp float)
0:6 'result' (noContraction temp float)
0:6 Constant:
0:6 5.000000
0:7 Sequence
0:7 move second child to first child (temp float)
0:7 'a' (noContraction temp float)
0:7 Constant:
0:7 10.000000
0:8 Sequence
0:8 move second child to first child (temp float)
0:8 'b' (noContraction temp float)
0:8 Constant:
0:8 20.000000
0:9 Sequence
0:9 move second child to first child (temp float)
0:9 'c' (noContraction temp float)
0:9 Constant:
0:9 30.000000
0:10 Sequence
0:10 move second child to first child (temp float)
0:10 'd' (noContraction temp float)
0:10 Constant:
0:10 40.000000
0:11 move second child to first child (temp float)
0:11 'result' (noContraction temp float)
0:11 add (noContraction temp float)
0:11 component-wise multiply (noContraction temp float)
0:11 'a' (noContraction temp float)
0:11 'b' (noContraction temp float)
0:11 component-wise multiply (noContraction temp float)
0:11 'c' (noContraction temp float)
0:11 'd' (noContraction temp float)
0:12 Branch: Return with expression
0:12 'result' (noContraction temp float)
0:15 Function Definition: continuous_assignment( (global void)
0:15 Function Parameters:
0:16 Sequence
0:16 Sequence
0:16 move second child to first child (temp float)
0:16 'result' (noContraction temp float)
0:16 Constant:
0:16 5.000000
0:17 Sequence
0:17 move second child to first child (temp int)
0:17 'a' (noContraction temp int)
0:17 Constant:
0:17 10 (const int)
0:18 Sequence
0:18 move second child to first child (temp int)
0:18 'b' (noContraction temp int)
0:18 Constant:
0:18 20 (const int)
0:19 move second child to first child (temp float)
0:19 'result' (noContraction temp float)
0:19 Convert int to float (temp float)
0:19 move second child to first child (temp int)
0:19 'a' (noContraction temp int)
0:19 add (noContraction temp int)
0:19 'b' (noContraction temp int)
0:19 Constant:
0:19 4 (const int)
0:22 Function Definition: convert( (global void)
0:22 Function Parameters:
0:? Sequence
0:24 Sequence
0:24 move second child to first child (temp int)
0:24 'a' (noContraction temp int)
0:24 Constant:
0:24 10 (const int)
0:25 Sequence
0:25 move second child to first child (temp int)
0:25 'b' (noContraction temp int)
0:25 Constant:
0:25 20 (const int)
0:26 move second child to first child (temp int)
0:26 'b' (noContraction temp int)
0:26 add (noContraction temp int)
0:26 'a' (noContraction temp int)
0:26 'b' (noContraction temp int)
0:27 move second child to first child (temp float)
0:27 'result' (noContraction temp float)
0:27 Convert int to float (temp float)
0:27 'b' (noContraction temp int)
0:30 Function Definition: loop_for( (global float)
0:30 Function Parameters:
0:31 Sequence
0:31 Sequence
0:31 move second child to first child (temp float)
0:31 'r1' (noContraction temp float)
0:31 Constant:
0:31 5.000000
0:32 Sequence
0:32 move second child to first child (temp float)
0:32 'r2' (noContraction temp float)
0:32 Constant:
0:32 10.000000
0:33 Sequence
0:33 move second child to first child (temp int)
0:33 'a' (temp int)
0:33 Constant:
0:33 10 (const int)
0:34 Sequence
0:34 move second child to first child (temp int)
0:34 'b' (noContraction temp int)
0:34 Constant:
0:34 20 (const int)
0:35 Sequence
0:35 move second child to first child (temp int)
0:35 'c' (noContraction temp int)
0:35 Constant:
0:35 30 (const int)
0:36 Sequence
0:36 Sequence
0:36 move second child to first child (temp int)
0:36 'i' (noContraction temp int)
0:36 Constant:
0:36 0 (const int)
0:36 Loop with condition tested first
0:36 Loop Condition
0:36 Compare Less Than (temp bool)
0:36 'i' (temp int)
0:36 'a' (temp int)
0:36 Loop Body
0:37 Sequence
0:37 add second child into first child (noContraction temp float)
0:37 'r1' (noContraction temp float)
0:37 add (noContraction temp float)
0:37 add (noContraction temp float)
0:37 Constant:
0:37 3.120000
0:37 Convert int to float (temp float)
0:37 'b' (noContraction temp int)
0:37 Convert int to float (temp float)
0:37 'i' (noContraction temp int)
0:38 add second child into first child (noContraction temp int)
0:38 'c' (noContraction temp int)
0:38 Constant:
0:38 1 (const int)
0:36 Loop Terminal Expression
0:36 Post-Increment (noContraction temp int)
0:36 'i' (noContraction temp int)
0:40 add second child into first child (temp int)
0:40 'a' (temp int)
0:40 Constant:
0:40 1 (const int)
0:41 move second child to first child (temp float)
0:41 'r2' (noContraction temp float)
0:41 Convert int to float (temp float)
0:41 'c' (noContraction temp int)
0:42 Branch: Return with expression
0:42 Construct float (temp float)
0:42 add (temp float)
0:42 'r1' (noContraction temp float)
0:42 'r2' (noContraction temp float)
0:45 Function Definition: loop_array( (global void)
0:45 Function Parameters:
0:46 Sequence
0:46 Sequence
0:46 move second child to first child (temp int)
0:46 'result' (noContraction temp int)
0:46 Constant:
0:46 5 (const int)
0:48 Sequence
0:48 move second child to first child (temp int)
0:48 'x' (noContraction temp int)
0:48 Constant:
0:48 22 (const int)
0:49 Sequence
0:49 move second child to first child (temp int)
0:49 'y' (noContraction temp int)
0:49 Constant:
0:49 33 (const int)
0:52 add second child into first child (noContraction temp int)
0:52 'result' (noContraction temp int)
0:52 add (noContraction temp int)
0:52 'x' (noContraction temp int)
0:52 'y' (noContraction temp int)
0:54 Sequence
0:54 Sequence
0:54 move second child to first child (temp int)
0:54 'i' (temp int)
0:54 Constant:
0:54 0 (const int)
0:54 Loop with condition tested first
0:54 Loop Condition
0:54 Compare Less Than (temp bool)
0:54 'i' (temp int)
0:54 Constant:
0:54 3 (const int)
0:54 Loop Body
0:56 Sequence
0:56 add second child into first child (noContraction temp int)
0:56 'result' (noContraction temp int)
0:56 add (noContraction temp int)
0:56 indirect index (noContraction temp int)
0:56 'a0' (temp 3-element array of int)
0:56 'i' (temp int)
0:56 Constant:
0:56 2 (const int)
0:58 move second child to first child (temp int)
0:58 indirect index (noContraction temp int)
0:58 'a0' (noContraction temp 3-element array of int)
0:58 'i' (temp int)
0:58 subtract (noContraction temp int)
0:58 Constant:
0:58 3 (const int)
0:58 Post-Increment (noContraction temp int)
0:58 'result' (noContraction temp int)
0:54 Loop Terminal Expression
0:54 Pre-Increment (temp int)
0:54 'i' (temp int)
0:62 Function Definition: loop_while( (global void)
0:62 Function Parameters:
0:63 Sequence
0:63 Sequence
0:63 move second child to first child (temp float)
0:63 'result' (noContraction temp float)
0:63 Constant:
0:63 5.000000
0:64 Sequence
0:64 move second child to first child (temp int)
0:64 'a' (noContraction temp int)
0:64 Constant:
0:64 10 (const int)
0:65 Sequence
0:65 move second child to first child (temp int)
0:65 'b' (noContraction temp int)
0:65 Constant:
0:65 20 (const int)
0:66 Loop with condition tested first
0:66 Loop Condition
0:66 Compare Less Than (temp bool)
0:66 'result' (noContraction temp float)
0:66 Constant:
0:66 10.000000
0:66 Loop Body
0:67 Sequence
0:67 add second child into first child (noContraction temp float)
0:67 'result' (noContraction temp float)
0:67 add (noContraction temp float)
0:67 Constant:
0:67 3.120000
0:67 Convert int to float (temp float)
0:67 'b' (noContraction temp int)
0:69 move second child to first child (temp float)
0:69 'result' (noContraction temp float)
0:69 Convert int to float (temp float)
0:69 add (noContraction temp int)
0:69 add (noContraction temp int)
0:69 'a' (noContraction temp int)
0:69 'b' (noContraction temp int)
0:69 Constant:
0:69 5 (const int)
0:70 move second child to first child (temp float)
0:70 'result' (noContraction temp float)
0:70 Constant:
0:70 11.100000
0:73 Function Definition: fma_not_decorated( (global float)
0:73 Function Parameters:
0:? Sequence
0:75 Sequence
0:75 move second child to first child (temp float)
0:75 'a' (noContraction temp float)
0:75 Constant:
0:75 1.000000
0:76 Sequence
0:76 move second child to first child (temp float)
0:76 'b' (noContraction temp float)
0:76 Constant:
0:76 2.000000
0:77 Sequence
0:77 move second child to first child (temp float)
0:77 'c' (noContraction temp float)
0:77 Constant:
0:77 3.000000
0:78 move second child to first child (temp float)
0:78 'b' (noContraction temp float)
0:78 add (noContraction temp float)
0:78 'b' (noContraction temp float)
0:78 'c' (noContraction temp float)
0:79 move second child to first child (temp float)
0:79 'result' (noContraction temp float)
0:79 fma (global float)
0:79 'a' (noContraction temp float)
0:79 'b' (noContraction temp float)
0:79 'c' (noContraction temp float)
0:80 Branch: Return with expression
0:80 'result' (noContraction temp float)
0:83 Function Definition: precise_return_exp_func( (noContraction temp float)
0:83 Function Parameters:
0:84 Sequence
0:84 Sequence
0:84 move second child to first child (temp float)
0:84 'a' (noContraction temp float)
0:84 Constant:
0:84 1.000000
0:85 Sequence
0:85 move second child to first child (temp float)
0:85 'b' (noContraction temp float)
0:85 Constant:
0:85 2.000000
0:86 Branch: Return with expression
0:86 add (noContraction temp float)
0:86 'a' (noContraction temp float)
0:86 'b' (noContraction temp float)
0:89 Function Definition: precise_return_val_func( (noContraction temp float)
0:89 Function Parameters:
0:90 Sequence
0:90 Sequence
0:90 move second child to first child (temp float)
0:90 'a' (noContraction temp float)
0:90 Constant:
0:90 1.000000
0:91 Sequence
0:91 move second child to first child (temp float)
0:91 'b' (noContraction temp float)
0:91 Constant:
0:91 2.000000
0:92 Sequence
0:92 move second child to first child (temp float)
0:92 'result' (noContraction temp float)
0:92 add (noContraction temp float)
0:92 'a' (noContraction temp float)
0:92 'b' (noContraction temp float)
0:93 Branch: Return with expression
0:93 'result' (noContraction temp float)
0:96 Function Definition: precise_func_parameter(f1;f1; (global float)
0:96 Function Parameters:
0:96 'b' (in float)
0:96 'c' (out float)
0:97 Sequence
0:97 Sequence
0:97 move second child to first child (temp float)
0:97 'a' (temp float)
0:97 Constant:
0:97 0.500000
0:98 move second child to first child (temp float)
0:98 'c' (out float)
0:98 add (temp float)
0:98 'a' (temp float)
0:98 'b' (in float)
0:99 Branch: Return with expression
0:99 subtract (temp float)
0:99 'a' (temp float)
0:99 'b' (in float)
0:102 Function Definition: main( (global void)
0:102 Function Parameters:
0:? Linker Objects