mirror of
https://gitlab.com/camelot/kickc.git
synced 2024-11-26 12:49:21 +00:00
Added initial strncat() implementation. Found error in post-increment when used in a condition.
This commit is contained in:
jespergravgaard
parent
9e5e8ddf3b
commit
9c40c2f0f2
@ -40,6 +40,16 @@ public class TestPrograms {
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public TestPrograms() {
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public TestPrograms() {
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}
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}
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@Test
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public void testPostIncrementProblem() throws IOException, URISyntaxException {
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compileAndCompare("post-increment-problem.c");
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}
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@Test
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public void testStrncat0() throws IOException, URISyntaxException {
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compileAndCompare("strncat-0.c");
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}
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@Test
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@Test
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public void testIncludes3() throws IOException, URISyntaxException {
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public void testIncludes3() throws IOException, URISyntaxException {
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compileAndCompare("complex/includes/includes-3.c");
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compileAndCompare("complex/includes/includes-3.c");
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23
src/test/kc/post-increment-problem.c
Normal file
23
src/test/kc/post-increment-problem.c
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@ -0,0 +1,23 @@
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// Illustrates a problem with post-incrementing a pointer used in a loop comparison
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char MESSAGE[20] = "camelot";
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char* const SCREEN = 0x0400;
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void main() {
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char* msg = MESSAGE;
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// Error! The post-increment in the following loop is turned into a pre-increment by the compiler.
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while(*msg++) {}
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// Now msg should point right after the zero, since the post increment was executed in the last condition that evaluated to zero.
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*--msg = 'x';
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*++msg = 0;
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// This should append an x at the end of the message - instead it replaces the last char of the message.
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// Print the resulting message - should be "camelotx" - but the error causes it to be "camelox"
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char i=0;
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while(MESSAGE[i]) {
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SCREEN[i] = MESSAGE[i];
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i++;
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}
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}
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37
src/test/kc/strncat-0.c
Normal file
37
src/test/kc/strncat-0.c
Normal file
@ -0,0 +1,37 @@
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// Test strncat() implementation
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char hello[] = "hello";
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char space[] = " ";
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char world[] = "world war 3";
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char build[40];
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char* const SCREEN = 0x0400;
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void main() {
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strncat(build, hello, 5);
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strncat(build, space, 5);
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strncat(build, world, 5);
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char i=0;
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while(build[i]) {
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SCREEN[i] = build[i];
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i++;
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}
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}
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// Appends the first num characters of source to destination, plus a terminating null-character.
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// If the length of the C string in source is less than num, only the content up to the terminating null-character is copied.
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char *strncat(char *destination, const char *source, unsigned int num) {
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char *dst = destination;
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// Skip the existing string at dest
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while (*dst) dst++;
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// Copy up to num chars from src
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while (num && (*dst = *source++)) {
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--num;
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++dst;
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}
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// Add null-character
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*dst = 0;
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return destination;
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}
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61
src/test/ref/post-increment-problem.asm
Normal file
61
src/test/ref/post-increment-problem.asm
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@ -0,0 +1,61 @@
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// Illustrates a problem with post-incrementing a pointer used in a loop comparison
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.pc = $801 "Basic"
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:BasicUpstart(main)
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.pc = $80d "Program"
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.label SCREEN = $400
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main: {
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.label msg = 2
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lda #<MESSAGE
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sta.z msg
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lda #>MESSAGE
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sta.z msg+1
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// Error! The post-increment in the following loop is turned into a pre-increment by the compiler.
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__b1:
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// while(*msg++)
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inc.z msg
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bne !+
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inc.z msg+1
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!:
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ldy #0
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lda (msg),y
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cmp #0
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bne __b1
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// *--msg = 'x';
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lda.z msg
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bne !+
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dec.z msg+1
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!:
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dec.z msg
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// *--msg = 'x'
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// Now msg should point right after the zero, since the post increment was executed in the last condition that evaluated to zero.
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lda #'x'
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ldy #0
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sta (msg),y
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// *++msg = 0;
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inc.z msg
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bne !+
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inc.z msg+1
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!:
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// *++msg = 0
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lda #0
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tay
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sta (msg),y
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tax
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__b3:
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// while(MESSAGE[i])
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lda MESSAGE,x
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cmp #0
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bne __b4
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// }
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rts
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__b4:
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// SCREEN[i] = MESSAGE[i]
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lda MESSAGE,x
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sta SCREEN,x
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// i++;
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inx
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jmp __b3
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}
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MESSAGE: .text "camelot"
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.byte 0
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.fill $c, 0
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36
src/test/ref/post-increment-problem.cfg
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36
src/test/ref/post-increment-problem.cfg
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@ -0,0 +1,36 @@
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@begin: scope:[] from
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[0] phi()
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to:@1
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@1: scope:[] from @begin
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[1] phi()
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[2] call main
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to:@end
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@end: scope:[] from @1
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[3] phi()
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(void()) main()
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main: scope:[main] from @1
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[4] phi()
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to:main::@1
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main::@1: scope:[main] from main main::@1
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[5] (byte*) main::msg#4 ← phi( main/(const byte*) MESSAGE main::@1/(byte*) main::msg#1 )
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[6] (byte*) main::msg#1 ← ++ (byte*) main::msg#4
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[7] if((byte) 0!=*((byte*) main::msg#1)) goto main::@1
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to:main::@2
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main::@2: scope:[main] from main::@1
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[8] (byte*) main::msg#2 ← -- (byte*) main::msg#1
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[9] *((byte*) main::msg#2) ← (byte) 'x'
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[10] (byte*) main::msg#3 ← ++ (byte*) main::msg#2
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[11] *((byte*) main::msg#3) ← (byte) 0
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to:main::@3
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main::@3: scope:[main] from main::@2 main::@4
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[12] (byte) main::i#2 ← phi( main::@2/(byte) 0 main::@4/(byte) main::i#1 )
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[13] if((byte) 0!=*((const byte*) MESSAGE + (byte) main::i#2)) goto main::@4
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to:main::@return
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main::@return: scope:[main] from main::@3
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[14] return
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to:@return
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main::@4: scope:[main] from main::@3
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[15] *((const nomodify byte*) SCREEN + (byte) main::i#2) ← *((const byte*) MESSAGE + (byte) main::i#2)
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[16] (byte) main::i#1 ← ++ (byte) main::i#2
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to:main::@3
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616
src/test/ref/post-increment-problem.log
Normal file
616
src/test/ref/post-increment-problem.log
Normal file
@ -0,0 +1,616 @@
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Warning! Adding boolean cast to non-boolean condition *((byte*) main::msg)
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Warning! Adding boolean cast to non-boolean condition *((const byte*) MESSAGE + (byte) main::i)
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Culled Empty Block (label) main::@2
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Culled Empty Block (label) main::@4
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Culled Empty Block (label) main::@5
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Culled Empty Block (label) main::@6
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Culled Empty Block (label) main::@10
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Culled Empty Block (label) main::@9
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Culled Empty Block (label) main::@11
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Culled Empty Block (label) main::@12
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CONTROL FLOW GRAPH SSA
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@begin: scope:[] from
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to:@1
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(void()) main()
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main: scope:[main] from @1
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(byte*) main::msg#0 ← (const byte*) MESSAGE
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to:main::@1
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main::@1: scope:[main] from main main::@1
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(byte*) main::msg#4 ← phi( main/(byte*) main::msg#0 main::@1/(byte*) main::msg#1 )
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(byte*) main::msg#1 ← ++ (byte*) main::msg#4
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(bool~) main::$0 ← (number) 0 != *((byte*) main::msg#1)
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if((bool~) main::$0) goto main::@1
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to:main::@3
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main::@3: scope:[main] from main::@1
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(byte*) main::msg#5 ← phi( main::@1/(byte*) main::msg#1 )
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(byte*) main::msg#2 ← -- (byte*) main::msg#5
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*((byte*) main::msg#2) ← (byte) 'x'
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(byte*) main::msg#3 ← ++ (byte*) main::msg#2
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*((byte*) main::msg#3) ← (number) 0
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(byte) main::i#0 ← (byte) 0
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to:main::@7
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main::@7: scope:[main] from main::@3 main::@8
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(byte) main::i#2 ← phi( main::@3/(byte) main::i#0 main::@8/(byte) main::i#1 )
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(bool~) main::$1 ← (number) 0 != *((const byte*) MESSAGE + (byte) main::i#2)
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if((bool~) main::$1) goto main::@8
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to:main::@return
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main::@8: scope:[main] from main::@7
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(byte) main::i#3 ← phi( main::@7/(byte) main::i#2 )
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*((const nomodify byte*) SCREEN + (byte) main::i#3) ← *((const byte*) MESSAGE + (byte) main::i#3)
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(byte) main::i#1 ← ++ (byte) main::i#3
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to:main::@7
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main::@return: scope:[main] from main::@7
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return
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to:@return
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@1: scope:[] from @begin
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call main
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to:@2
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@2: scope:[] from @1
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to:@end
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@end: scope:[] from @2
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SYMBOL TABLE SSA
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(label) @1
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(label) @2
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(label) @begin
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(label) @end
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(const byte*) MESSAGE[(number) $14] = (byte*) "camelot"
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(const nomodify byte*) SCREEN = (byte*)(number) $400
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(void()) main()
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(bool~) main::$0
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(bool~) main::$1
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(label) main::@1
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(label) main::@3
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(label) main::@7
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(label) main::@8
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(label) main::@return
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(byte) main::i
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(byte) main::i#0
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(byte) main::i#1
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(byte) main::i#2
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(byte) main::i#3
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(byte*) main::msg
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(byte*) main::msg#0
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(byte*) main::msg#1
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(byte*) main::msg#2
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(byte*) main::msg#3
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(byte*) main::msg#4
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(byte*) main::msg#5
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Adding number conversion cast (unumber) 0 in (bool~) main::$0 ← (number) 0 != *((byte*) main::msg#1)
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Adding number conversion cast (unumber) 0 in *((byte*) main::msg#3) ← (number) 0
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Adding number conversion cast (unumber) 0 in (bool~) main::$1 ← (number) 0 != *((const byte*) MESSAGE + (byte) main::i#2)
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Successful SSA optimization PassNAddNumberTypeConversions
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Inlining cast *((byte*) main::msg#3) ← (unumber)(number) 0
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Successful SSA optimization Pass2InlineCast
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Simplifying constant pointer cast (byte*) 1024
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Simplifying constant integer cast 0
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Simplifying constant integer cast 0
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Simplifying constant integer cast 0
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Successful SSA optimization PassNCastSimplification
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Finalized unsigned number type (byte) 0
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Finalized unsigned number type (byte) 0
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Finalized unsigned number type (byte) 0
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Successful SSA optimization PassNFinalizeNumberTypeConversions
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Alias main::msg#1 = main::msg#5
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Alias main::i#2 = main::i#3
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Successful SSA optimization Pass2AliasElimination
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Simple Condition (bool~) main::$0 [4] if((byte) 0!=*((byte*) main::msg#1)) goto main::@1
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Simple Condition (bool~) main::$1 [12] if((byte) 0!=*((const byte*) MESSAGE + (byte) main::i#2)) goto main::@8
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Successful SSA optimization Pass2ConditionalJumpSimplification
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Constant (const byte*) main::msg#0 = MESSAGE
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Constant (const byte) main::i#0 = 0
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Successful SSA optimization Pass2ConstantIdentification
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Inlining constant with var siblings (const byte*) main::msg#0
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Inlining constant with var siblings (const byte) main::i#0
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Constant inlined main::i#0 = (byte) 0
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Constant inlined main::msg#0 = (const byte*) MESSAGE
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Successful SSA optimization Pass2ConstantInlining
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Added new block during phi lifting main::@13(between main::@1 and main::@1)
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Adding NOP phi() at start of @begin
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Adding NOP phi() at start of @1
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Adding NOP phi() at start of @2
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Adding NOP phi() at start of @end
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Adding NOP phi() at start of main
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CALL GRAPH
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Calls in [] to main:2
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Created 2 initial phi equivalence classes
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Coalesced [18] main::i#4 ← main::i#1
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Coalesced [19] main::msg#6 ← main::msg#1
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Coalesced down to 2 phi equivalence classes
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Culled Empty Block (label) @2
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Culled Empty Block (label) main::@13
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Renumbering block main::@3 to main::@2
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Renumbering block main::@7 to main::@3
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Renumbering block main::@8 to main::@4
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Adding NOP phi() at start of @begin
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Adding NOP phi() at start of @1
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Adding NOP phi() at start of @end
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Adding NOP phi() at start of main
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FINAL CONTROL FLOW GRAPH
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@begin: scope:[] from
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[0] phi()
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to:@1
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@1: scope:[] from @begin
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[1] phi()
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[2] call main
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to:@end
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@end: scope:[] from @1
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[3] phi()
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(void()) main()
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main: scope:[main] from @1
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[4] phi()
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to:main::@1
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main::@1: scope:[main] from main main::@1
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[5] (byte*) main::msg#4 ← phi( main/(const byte*) MESSAGE main::@1/(byte*) main::msg#1 )
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[6] (byte*) main::msg#1 ← ++ (byte*) main::msg#4
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[7] if((byte) 0!=*((byte*) main::msg#1)) goto main::@1
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to:main::@2
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main::@2: scope:[main] from main::@1
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[8] (byte*) main::msg#2 ← -- (byte*) main::msg#1
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[9] *((byte*) main::msg#2) ← (byte) 'x'
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[10] (byte*) main::msg#3 ← ++ (byte*) main::msg#2
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[11] *((byte*) main::msg#3) ← (byte) 0
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to:main::@3
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main::@3: scope:[main] from main::@2 main::@4
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[12] (byte) main::i#2 ← phi( main::@2/(byte) 0 main::@4/(byte) main::i#1 )
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||||||
|
[13] if((byte) 0!=*((const byte*) MESSAGE + (byte) main::i#2)) goto main::@4
|
||||||
|
to:main::@return
|
||||||
|
main::@return: scope:[main] from main::@3
|
||||||
|
[14] return
|
||||||
|
to:@return
|
||||||
|
main::@4: scope:[main] from main::@3
|
||||||
|
[15] *((const nomodify byte*) SCREEN + (byte) main::i#2) ← *((const byte*) MESSAGE + (byte) main::i#2)
|
||||||
|
[16] (byte) main::i#1 ← ++ (byte) main::i#2
|
||||||
|
to:main::@3
|
||||||
|
|
||||||
|
|
||||||
|
VARIABLE REGISTER WEIGHTS
|
||||||
|
(void()) main()
|
||||||
|
(byte) main::i
|
||||||
|
(byte) main::i#1 202.0
|
||||||
|
(byte) main::i#2 168.33333333333331
|
||||||
|
(byte*) main::msg
|
||||||
|
(byte*) main::msg#1 157.0
|
||||||
|
(byte*) main::msg#2 16.5
|
||||||
|
(byte*) main::msg#3 22.0
|
||||||
|
(byte*) main::msg#4 202.0
|
||||||
|
|
||||||
|
Initial phi equivalence classes
|
||||||
|
[ main::msg#4 main::msg#1 ]
|
||||||
|
[ main::i#2 main::i#1 ]
|
||||||
|
Added variable main::msg#2 to live range equivalence class [ main::msg#2 ]
|
||||||
|
Added variable main::msg#3 to live range equivalence class [ main::msg#3 ]
|
||||||
|
Complete equivalence classes
|
||||||
|
[ main::msg#4 main::msg#1 ]
|
||||||
|
[ main::i#2 main::i#1 ]
|
||||||
|
[ main::msg#2 ]
|
||||||
|
[ main::msg#3 ]
|
||||||
|
Allocated zp[2]:2 [ main::msg#4 main::msg#1 ]
|
||||||
|
Allocated zp[1]:4 [ main::i#2 main::i#1 ]
|
||||||
|
Allocated zp[2]:5 [ main::msg#2 ]
|
||||||
|
Allocated zp[2]:7 [ main::msg#3 ]
|
||||||
|
|
||||||
|
INITIAL ASM
|
||||||
|
Target platform is c64basic / MOS6502X
|
||||||
|
// File Comments
|
||||||
|
// Illustrates a problem with post-incrementing a pointer used in a loop comparison
|
||||||
|
// Upstart
|
||||||
|
.pc = $801 "Basic"
|
||||||
|
:BasicUpstart(__bbegin)
|
||||||
|
.pc = $80d "Program"
|
||||||
|
// Global Constants & labels
|
||||||
|
.label SCREEN = $400
|
||||||
|
// @begin
|
||||||
|
__bbegin:
|
||||||
|
// [1] phi from @begin to @1 [phi:@begin->@1]
|
||||||
|
__b1_from___bbegin:
|
||||||
|
jmp __b1
|
||||||
|
// @1
|
||||||
|
__b1:
|
||||||
|
// [2] call main
|
||||||
|
// [4] phi from @1 to main [phi:@1->main]
|
||||||
|
main_from___b1:
|
||||||
|
jsr main
|
||||||
|
// [3] phi from @1 to @end [phi:@1->@end]
|
||||||
|
__bend_from___b1:
|
||||||
|
jmp __bend
|
||||||
|
// @end
|
||||||
|
__bend:
|
||||||
|
// main
|
||||||
|
main: {
|
||||||
|
.label msg = 2
|
||||||
|
.label msg_1 = 5
|
||||||
|
.label msg_2 = 7
|
||||||
|
// Print the resulting message - should be "camelotx" - but the error causes it to be "camelox"
|
||||||
|
.label i = 4
|
||||||
|
// [5] phi from main to main::@1 [phi:main->main::@1]
|
||||||
|
__b1_from_main:
|
||||||
|
// [5] phi (byte*) main::msg#4 = (const byte*) MESSAGE [phi:main->main::@1#0] -- pbuz1=pbuc1
|
||||||
|
lda #<MESSAGE
|
||||||
|
sta.z msg
|
||||||
|
lda #>MESSAGE
|
||||||
|
sta.z msg+1
|
||||||
|
jmp __b1
|
||||||
|
// Error! The post-increment in the following loop is turned into a pre-increment by the compiler.
|
||||||
|
// [5] phi from main::@1 to main::@1 [phi:main::@1->main::@1]
|
||||||
|
__b1_from___b1:
|
||||||
|
// [5] phi (byte*) main::msg#4 = (byte*) main::msg#1 [phi:main::@1->main::@1#0] -- register_copy
|
||||||
|
jmp __b1
|
||||||
|
// main::@1
|
||||||
|
__b1:
|
||||||
|
// [6] (byte*) main::msg#1 ← ++ (byte*) main::msg#4 -- pbuz1=_inc_pbuz1
|
||||||
|
inc.z msg
|
||||||
|
bne !+
|
||||||
|
inc.z msg+1
|
||||||
|
!:
|
||||||
|
// [7] if((byte) 0!=*((byte*) main::msg#1)) goto main::@1 -- vbuc1_neq__deref_pbuz1_then_la1
|
||||||
|
ldy #0
|
||||||
|
lda (msg),y
|
||||||
|
cmp #0
|
||||||
|
bne __b1_from___b1
|
||||||
|
jmp __b2
|
||||||
|
// main::@2
|
||||||
|
__b2:
|
||||||
|
// [8] (byte*) main::msg#2 ← -- (byte*) main::msg#1 -- pbuz1=_dec_pbuz2
|
||||||
|
lda.z msg
|
||||||
|
sec
|
||||||
|
sbc #1
|
||||||
|
sta.z msg_1
|
||||||
|
lda.z msg+1
|
||||||
|
sbc #0
|
||||||
|
sta.z msg_1+1
|
||||||
|
// [9] *((byte*) main::msg#2) ← (byte) 'x' -- _deref_pbuz1=vbuc1
|
||||||
|
// Now msg should point right after the zero, since the post increment was executed in the last condition that evaluated to zero.
|
||||||
|
lda #'x'
|
||||||
|
ldy #0
|
||||||
|
sta (msg_1),y
|
||||||
|
// [10] (byte*) main::msg#3 ← ++ (byte*) main::msg#2 -- pbuz1=_inc_pbuz2
|
||||||
|
lda.z msg_1
|
||||||
|
clc
|
||||||
|
adc #1
|
||||||
|
sta.z msg_2
|
||||||
|
lda.z msg_1+1
|
||||||
|
adc #0
|
||||||
|
sta.z msg_2+1
|
||||||
|
// [11] *((byte*) main::msg#3) ← (byte) 0 -- _deref_pbuz1=vbuc1
|
||||||
|
lda #0
|
||||||
|
ldy #0
|
||||||
|
sta (msg_2),y
|
||||||
|
// [12] phi from main::@2 to main::@3 [phi:main::@2->main::@3]
|
||||||
|
__b3_from___b2:
|
||||||
|
// [12] phi (byte) main::i#2 = (byte) 0 [phi:main::@2->main::@3#0] -- vbuz1=vbuc1
|
||||||
|
lda #0
|
||||||
|
sta.z i
|
||||||
|
jmp __b3
|
||||||
|
// main::@3
|
||||||
|
__b3:
|
||||||
|
// [13] if((byte) 0!=*((const byte*) MESSAGE + (byte) main::i#2)) goto main::@4 -- vbuc1_neq_pbuc2_derefidx_vbuz1_then_la1
|
||||||
|
lda #0
|
||||||
|
ldy.z i
|
||||||
|
cmp MESSAGE,y
|
||||||
|
bne __b4
|
||||||
|
jmp __breturn
|
||||||
|
// main::@return
|
||||||
|
__breturn:
|
||||||
|
// [14] return
|
||||||
|
rts
|
||||||
|
// main::@4
|
||||||
|
__b4:
|
||||||
|
// [15] *((const nomodify byte*) SCREEN + (byte) main::i#2) ← *((const byte*) MESSAGE + (byte) main::i#2) -- pbuc1_derefidx_vbuz1=pbuc2_derefidx_vbuz1
|
||||||
|
ldy.z i
|
||||||
|
lda MESSAGE,y
|
||||||
|
sta SCREEN,y
|
||||||
|
// [16] (byte) main::i#1 ← ++ (byte) main::i#2 -- vbuz1=_inc_vbuz1
|
||||||
|
inc.z i
|
||||||
|
// [12] phi from main::@4 to main::@3 [phi:main::@4->main::@3]
|
||||||
|
__b3_from___b4:
|
||||||
|
// [12] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@4->main::@3#0] -- register_copy
|
||||||
|
jmp __b3
|
||||||
|
}
|
||||||
|
// File Data
|
||||||
|
MESSAGE: .text "camelot"
|
||||||
|
.byte 0
|
||||||
|
.fill $c, 0
|
||||||
|
|
||||||
|
REGISTER UPLIFT POTENTIAL REGISTERS
|
||||||
|
Statement [7] if((byte) 0!=*((byte*) main::msg#1)) goto main::@1 [ main::msg#1 ] ( main:2 [ main::msg#1 ] { } ) always clobbers reg byte a reg byte y
|
||||||
|
Statement [8] (byte*) main::msg#2 ← -- (byte*) main::msg#1 [ main::msg#2 ] ( main:2 [ main::msg#2 ] { } ) always clobbers reg byte a
|
||||||
|
Statement [9] *((byte*) main::msg#2) ← (byte) 'x' [ main::msg#2 ] ( main:2 [ main::msg#2 ] { } ) always clobbers reg byte a reg byte y
|
||||||
|
Statement [10] (byte*) main::msg#3 ← ++ (byte*) main::msg#2 [ main::msg#3 ] ( main:2 [ main::msg#3 ] { } ) always clobbers reg byte a
|
||||||
|
Statement [11] *((byte*) main::msg#3) ← (byte) 0 [ ] ( main:2 [ ] { } ) always clobbers reg byte a reg byte y
|
||||||
|
Statement [13] if((byte) 0!=*((const byte*) MESSAGE + (byte) main::i#2)) goto main::@4 [ main::i#2 ] ( main:2 [ main::i#2 ] { } ) always clobbers reg byte a
|
||||||
|
Removing always clobbered register reg byte a as potential for zp[1]:4 [ main::i#2 main::i#1 ]
|
||||||
|
Statement [15] *((const nomodify byte*) SCREEN + (byte) main::i#2) ← *((const byte*) MESSAGE + (byte) main::i#2) [ main::i#2 ] ( main:2 [ main::i#2 ] { } ) always clobbers reg byte a
|
||||||
|
Statement [7] if((byte) 0!=*((byte*) main::msg#1)) goto main::@1 [ main::msg#1 ] ( main:2 [ main::msg#1 ] { } ) always clobbers reg byte a reg byte y
|
||||||
|
Statement [8] (byte*) main::msg#2 ← -- (byte*) main::msg#1 [ main::msg#2 ] ( main:2 [ main::msg#2 ] { } ) always clobbers reg byte a
|
||||||
|
Statement [9] *((byte*) main::msg#2) ← (byte) 'x' [ main::msg#2 ] ( main:2 [ main::msg#2 ] { } ) always clobbers reg byte a reg byte y
|
||||||
|
Statement [10] (byte*) main::msg#3 ← ++ (byte*) main::msg#2 [ main::msg#3 ] ( main:2 [ main::msg#3 ] { } ) always clobbers reg byte a
|
||||||
|
Statement [11] *((byte*) main::msg#3) ← (byte) 0 [ ] ( main:2 [ ] { } ) always clobbers reg byte a reg byte y
|
||||||
|
Statement [13] if((byte) 0!=*((const byte*) MESSAGE + (byte) main::i#2)) goto main::@4 [ main::i#2 ] ( main:2 [ main::i#2 ] { } ) always clobbers reg byte a
|
||||||
|
Statement [15] *((const nomodify byte*) SCREEN + (byte) main::i#2) ← *((const byte*) MESSAGE + (byte) main::i#2) [ main::i#2 ] ( main:2 [ main::i#2 ] { } ) always clobbers reg byte a
|
||||||
|
Potential registers zp[2]:2 [ main::msg#4 main::msg#1 ] : zp[2]:2 ,
|
||||||
|
Potential registers zp[1]:4 [ main::i#2 main::i#1 ] : zp[1]:4 , reg byte x , reg byte y ,
|
||||||
|
Potential registers zp[2]:5 [ main::msg#2 ] : zp[2]:5 ,
|
||||||
|
Potential registers zp[2]:7 [ main::msg#3 ] : zp[2]:7 ,
|
||||||
|
|
||||||
|
REGISTER UPLIFT SCOPES
|
||||||
|
Uplift Scope [main] 370.33: zp[1]:4 [ main::i#2 main::i#1 ] 359: zp[2]:2 [ main::msg#4 main::msg#1 ] 22: zp[2]:7 [ main::msg#3 ] 16.5: zp[2]:5 [ main::msg#2 ]
|
||||||
|
Uplift Scope []
|
||||||
|
|
||||||
|
Uplifting [main] best 824 combination reg byte x [ main::i#2 main::i#1 ] zp[2]:2 [ main::msg#4 main::msg#1 ] zp[2]:7 [ main::msg#3 ] zp[2]:5 [ main::msg#2 ]
|
||||||
|
Uplifting [] best 824 combination
|
||||||
|
Coalescing zero page register [ zp[2]:2 [ main::msg#4 main::msg#1 ] ] with [ zp[2]:5 [ main::msg#2 ] ] - score: 1
|
||||||
|
Coalescing zero page register [ zp[2]:2 [ main::msg#4 main::msg#1 main::msg#2 ] ] with [ zp[2]:7 [ main::msg#3 ] ] - score: 1
|
||||||
|
|
||||||
|
ASSEMBLER BEFORE OPTIMIZATION
|
||||||
|
// File Comments
|
||||||
|
// Illustrates a problem with post-incrementing a pointer used in a loop comparison
|
||||||
|
// Upstart
|
||||||
|
.pc = $801 "Basic"
|
||||||
|
:BasicUpstart(__bbegin)
|
||||||
|
.pc = $80d "Program"
|
||||||
|
// Global Constants & labels
|
||||||
|
.label SCREEN = $400
|
||||||
|
// @begin
|
||||||
|
__bbegin:
|
||||||
|
// [1] phi from @begin to @1 [phi:@begin->@1]
|
||||||
|
__b1_from___bbegin:
|
||||||
|
jmp __b1
|
||||||
|
// @1
|
||||||
|
__b1:
|
||||||
|
// [2] call main
|
||||||
|
// [4] phi from @1 to main [phi:@1->main]
|
||||||
|
main_from___b1:
|
||||||
|
jsr main
|
||||||
|
// [3] phi from @1 to @end [phi:@1->@end]
|
||||||
|
__bend_from___b1:
|
||||||
|
jmp __bend
|
||||||
|
// @end
|
||||||
|
__bend:
|
||||||
|
// main
|
||||||
|
main: {
|
||||||
|
.label msg = 2
|
||||||
|
// [5] phi from main to main::@1 [phi:main->main::@1]
|
||||||
|
__b1_from_main:
|
||||||
|
// [5] phi (byte*) main::msg#4 = (const byte*) MESSAGE [phi:main->main::@1#0] -- pbuz1=pbuc1
|
||||||
|
lda #<MESSAGE
|
||||||
|
sta.z msg
|
||||||
|
lda #>MESSAGE
|
||||||
|
sta.z msg+1
|
||||||
|
jmp __b1
|
||||||
|
// Error! The post-increment in the following loop is turned into a pre-increment by the compiler.
|
||||||
|
// [5] phi from main::@1 to main::@1 [phi:main::@1->main::@1]
|
||||||
|
__b1_from___b1:
|
||||||
|
// [5] phi (byte*) main::msg#4 = (byte*) main::msg#1 [phi:main::@1->main::@1#0] -- register_copy
|
||||||
|
jmp __b1
|
||||||
|
// main::@1
|
||||||
|
__b1:
|
||||||
|
// [6] (byte*) main::msg#1 ← ++ (byte*) main::msg#4 -- pbuz1=_inc_pbuz1
|
||||||
|
inc.z msg
|
||||||
|
bne !+
|
||||||
|
inc.z msg+1
|
||||||
|
!:
|
||||||
|
// [7] if((byte) 0!=*((byte*) main::msg#1)) goto main::@1 -- vbuc1_neq__deref_pbuz1_then_la1
|
||||||
|
ldy #0
|
||||||
|
lda (msg),y
|
||||||
|
cmp #0
|
||||||
|
bne __b1_from___b1
|
||||||
|
jmp __b2
|
||||||
|
// main::@2
|
||||||
|
__b2:
|
||||||
|
// [8] (byte*) main::msg#2 ← -- (byte*) main::msg#1 -- pbuz1=_dec_pbuz1
|
||||||
|
lda.z msg
|
||||||
|
bne !+
|
||||||
|
dec.z msg+1
|
||||||
|
!:
|
||||||
|
dec.z msg
|
||||||
|
// [9] *((byte*) main::msg#2) ← (byte) 'x' -- _deref_pbuz1=vbuc1
|
||||||
|
// Now msg should point right after the zero, since the post increment was executed in the last condition that evaluated to zero.
|
||||||
|
lda #'x'
|
||||||
|
ldy #0
|
||||||
|
sta (msg),y
|
||||||
|
// [10] (byte*) main::msg#3 ← ++ (byte*) main::msg#2 -- pbuz1=_inc_pbuz1
|
||||||
|
inc.z msg
|
||||||
|
bne !+
|
||||||
|
inc.z msg+1
|
||||||
|
!:
|
||||||
|
// [11] *((byte*) main::msg#3) ← (byte) 0 -- _deref_pbuz1=vbuc1
|
||||||
|
lda #0
|
||||||
|
ldy #0
|
||||||
|
sta (msg),y
|
||||||
|
// [12] phi from main::@2 to main::@3 [phi:main::@2->main::@3]
|
||||||
|
__b3_from___b2:
|
||||||
|
// [12] phi (byte) main::i#2 = (byte) 0 [phi:main::@2->main::@3#0] -- vbuxx=vbuc1
|
||||||
|
ldx #0
|
||||||
|
jmp __b3
|
||||||
|
// main::@3
|
||||||
|
__b3:
|
||||||
|
// [13] if((byte) 0!=*((const byte*) MESSAGE + (byte) main::i#2)) goto main::@4 -- vbuc1_neq_pbuc2_derefidx_vbuxx_then_la1
|
||||||
|
lda MESSAGE,x
|
||||||
|
cmp #0
|
||||||
|
bne __b4
|
||||||
|
jmp __breturn
|
||||||
|
// main::@return
|
||||||
|
__breturn:
|
||||||
|
// [14] return
|
||||||
|
rts
|
||||||
|
// main::@4
|
||||||
|
__b4:
|
||||||
|
// [15] *((const nomodify byte*) SCREEN + (byte) main::i#2) ← *((const byte*) MESSAGE + (byte) main::i#2) -- pbuc1_derefidx_vbuxx=pbuc2_derefidx_vbuxx
|
||||||
|
lda MESSAGE,x
|
||||||
|
sta SCREEN,x
|
||||||
|
// [16] (byte) main::i#1 ← ++ (byte) main::i#2 -- vbuxx=_inc_vbuxx
|
||||||
|
inx
|
||||||
|
// [12] phi from main::@4 to main::@3 [phi:main::@4->main::@3]
|
||||||
|
__b3_from___b4:
|
||||||
|
// [12] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@4->main::@3#0] -- register_copy
|
||||||
|
jmp __b3
|
||||||
|
}
|
||||||
|
// File Data
|
||||||
|
MESSAGE: .text "camelot"
|
||||||
|
.byte 0
|
||||||
|
.fill $c, 0
|
||||||
|
|
||||||
|
ASSEMBLER OPTIMIZATIONS
|
||||||
|
Removing instruction jmp __b1
|
||||||
|
Removing instruction jmp __bend
|
||||||
|
Removing instruction jmp __b1
|
||||||
|
Removing instruction jmp __b2
|
||||||
|
Removing instruction jmp __b3
|
||||||
|
Removing instruction jmp __breturn
|
||||||
|
Succesful ASM optimization Pass5NextJumpElimination
|
||||||
|
Replacing instruction ldy #0 with TAY
|
||||||
|
Replacing label __b1_from___b1 with __b1
|
||||||
|
Removing instruction __b1_from___bbegin:
|
||||||
|
Removing instruction __b1:
|
||||||
|
Removing instruction main_from___b1:
|
||||||
|
Removing instruction __bend_from___b1:
|
||||||
|
Removing instruction __b1_from___b1:
|
||||||
|
Succesful ASM optimization Pass5RedundantLabelElimination
|
||||||
|
Removing instruction __bend:
|
||||||
|
Removing instruction __b1_from_main:
|
||||||
|
Removing instruction __b2:
|
||||||
|
Removing instruction __b3_from___b2:
|
||||||
|
Removing instruction __breturn:
|
||||||
|
Removing instruction __b3_from___b4:
|
||||||
|
Succesful ASM optimization Pass5UnusedLabelElimination
|
||||||
|
Updating BasicUpstart to call main directly
|
||||||
|
Removing instruction jsr main
|
||||||
|
Succesful ASM optimization Pass5SkipBegin
|
||||||
|
Removing instruction jmp __b1
|
||||||
|
Succesful ASM optimization Pass5NextJumpElimination
|
||||||
|
Replacing instruction ldx #0 with TAX
|
||||||
|
Removing instruction __bbegin:
|
||||||
|
Succesful ASM optimization Pass5UnusedLabelElimination
|
||||||
|
|
||||||
|
FINAL SYMBOL TABLE
|
||||||
|
(label) @1
|
||||||
|
(label) @begin
|
||||||
|
(label) @end
|
||||||
|
(const byte*) MESSAGE[(number) $14] = (byte*) "camelot"
|
||||||
|
(const nomodify byte*) SCREEN = (byte*) 1024
|
||||||
|
(void()) main()
|
||||||
|
(label) main::@1
|
||||||
|
(label) main::@2
|
||||||
|
(label) main::@3
|
||||||
|
(label) main::@4
|
||||||
|
(label) main::@return
|
||||||
|
(byte) main::i
|
||||||
|
(byte) main::i#1 reg byte x 202.0
|
||||||
|
(byte) main::i#2 reg byte x 168.33333333333331
|
||||||
|
(byte*) main::msg
|
||||||
|
(byte*) main::msg#1 msg zp[2]:2 157.0
|
||||||
|
(byte*) main::msg#2 msg zp[2]:2 16.5
|
||||||
|
(byte*) main::msg#3 msg zp[2]:2 22.0
|
||||||
|
(byte*) main::msg#4 msg zp[2]:2 202.0
|
||||||
|
|
||||||
|
zp[2]:2 [ main::msg#4 main::msg#1 main::msg#2 main::msg#3 ]
|
||||||
|
reg byte x [ main::i#2 main::i#1 ]
|
||||||
|
|
||||||
|
|
||||||
|
FINAL ASSEMBLER
|
||||||
|
Score: 653
|
||||||
|
|
||||||
|
// File Comments
|
||||||
|
// Illustrates a problem with post-incrementing a pointer used in a loop comparison
|
||||||
|
// Upstart
|
||||||
|
.pc = $801 "Basic"
|
||||||
|
:BasicUpstart(main)
|
||||||
|
.pc = $80d "Program"
|
||||||
|
// Global Constants & labels
|
||||||
|
.label SCREEN = $400
|
||||||
|
// @begin
|
||||||
|
// [1] phi from @begin to @1 [phi:@begin->@1]
|
||||||
|
// @1
|
||||||
|
// [2] call main
|
||||||
|
// [4] phi from @1 to main [phi:@1->main]
|
||||||
|
// [3] phi from @1 to @end [phi:@1->@end]
|
||||||
|
// @end
|
||||||
|
// main
|
||||||
|
main: {
|
||||||
|
.label msg = 2
|
||||||
|
// [5] phi from main to main::@1 [phi:main->main::@1]
|
||||||
|
// [5] phi (byte*) main::msg#4 = (const byte*) MESSAGE [phi:main->main::@1#0] -- pbuz1=pbuc1
|
||||||
|
lda #<MESSAGE
|
||||||
|
sta.z msg
|
||||||
|
lda #>MESSAGE
|
||||||
|
sta.z msg+1
|
||||||
|
// Error! The post-increment in the following loop is turned into a pre-increment by the compiler.
|
||||||
|
// [5] phi from main::@1 to main::@1 [phi:main::@1->main::@1]
|
||||||
|
// [5] phi (byte*) main::msg#4 = (byte*) main::msg#1 [phi:main::@1->main::@1#0] -- register_copy
|
||||||
|
// main::@1
|
||||||
|
__b1:
|
||||||
|
// while(*msg++)
|
||||||
|
// [6] (byte*) main::msg#1 ← ++ (byte*) main::msg#4 -- pbuz1=_inc_pbuz1
|
||||||
|
inc.z msg
|
||||||
|
bne !+
|
||||||
|
inc.z msg+1
|
||||||
|
!:
|
||||||
|
// [7] if((byte) 0!=*((byte*) main::msg#1)) goto main::@1 -- vbuc1_neq__deref_pbuz1_then_la1
|
||||||
|
ldy #0
|
||||||
|
lda (msg),y
|
||||||
|
cmp #0
|
||||||
|
bne __b1
|
||||||
|
// main::@2
|
||||||
|
// *--msg = 'x';
|
||||||
|
// [8] (byte*) main::msg#2 ← -- (byte*) main::msg#1 -- pbuz1=_dec_pbuz1
|
||||||
|
lda.z msg
|
||||||
|
bne !+
|
||||||
|
dec.z msg+1
|
||||||
|
!:
|
||||||
|
dec.z msg
|
||||||
|
// *--msg = 'x'
|
||||||
|
// [9] *((byte*) main::msg#2) ← (byte) 'x' -- _deref_pbuz1=vbuc1
|
||||||
|
// Now msg should point right after the zero, since the post increment was executed in the last condition that evaluated to zero.
|
||||||
|
lda #'x'
|
||||||
|
ldy #0
|
||||||
|
sta (msg),y
|
||||||
|
// *++msg = 0;
|
||||||
|
// [10] (byte*) main::msg#3 ← ++ (byte*) main::msg#2 -- pbuz1=_inc_pbuz1
|
||||||
|
inc.z msg
|
||||||
|
bne !+
|
||||||
|
inc.z msg+1
|
||||||
|
!:
|
||||||
|
// *++msg = 0
|
||||||
|
// [11] *((byte*) main::msg#3) ← (byte) 0 -- _deref_pbuz1=vbuc1
|
||||||
|
lda #0
|
||||||
|
tay
|
||||||
|
sta (msg),y
|
||||||
|
// [12] phi from main::@2 to main::@3 [phi:main::@2->main::@3]
|
||||||
|
// [12] phi (byte) main::i#2 = (byte) 0 [phi:main::@2->main::@3#0] -- vbuxx=vbuc1
|
||||||
|
tax
|
||||||
|
// main::@3
|
||||||
|
__b3:
|
||||||
|
// while(MESSAGE[i])
|
||||||
|
// [13] if((byte) 0!=*((const byte*) MESSAGE + (byte) main::i#2)) goto main::@4 -- vbuc1_neq_pbuc2_derefidx_vbuxx_then_la1
|
||||||
|
lda MESSAGE,x
|
||||||
|
cmp #0
|
||||||
|
bne __b4
|
||||||
|
// main::@return
|
||||||
|
// }
|
||||||
|
// [14] return
|
||||||
|
rts
|
||||||
|
// main::@4
|
||||||
|
__b4:
|
||||||
|
// SCREEN[i] = MESSAGE[i]
|
||||||
|
// [15] *((const nomodify byte*) SCREEN + (byte) main::i#2) ← *((const byte*) MESSAGE + (byte) main::i#2) -- pbuc1_derefidx_vbuxx=pbuc2_derefidx_vbuxx
|
||||||
|
lda MESSAGE,x
|
||||||
|
sta SCREEN,x
|
||||||
|
// i++;
|
||||||
|
// [16] (byte) main::i#1 ← ++ (byte) main::i#2 -- vbuxx=_inc_vbuxx
|
||||||
|
inx
|
||||||
|
// [12] phi from main::@4 to main::@3 [phi:main::@4->main::@3]
|
||||||
|
// [12] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@4->main::@3#0] -- register_copy
|
||||||
|
jmp __b3
|
||||||
|
}
|
||||||
|
// File Data
|
||||||
|
MESSAGE: .text "camelot"
|
||||||
|
.byte 0
|
||||||
|
.fill $c, 0
|
||||||
|
|
||||||
22
src/test/ref/post-increment-problem.sym
Normal file
22
src/test/ref/post-increment-problem.sym
Normal file
@ -0,0 +1,22 @@
|
|||||||
|
(label) @1
|
||||||
|
(label) @begin
|
||||||
|
(label) @end
|
||||||
|
(const byte*) MESSAGE[(number) $14] = (byte*) "camelot"
|
||||||
|
(const nomodify byte*) SCREEN = (byte*) 1024
|
||||||
|
(void()) main()
|
||||||
|
(label) main::@1
|
||||||
|
(label) main::@2
|
||||||
|
(label) main::@3
|
||||||
|
(label) main::@4
|
||||||
|
(label) main::@return
|
||||||
|
(byte) main::i
|
||||||
|
(byte) main::i#1 reg byte x 202.0
|
||||||
|
(byte) main::i#2 reg byte x 168.33333333333331
|
||||||
|
(byte*) main::msg
|
||||||
|
(byte*) main::msg#1 msg zp[2]:2 157.0
|
||||||
|
(byte*) main::msg#2 msg zp[2]:2 16.5
|
||||||
|
(byte*) main::msg#3 msg zp[2]:2 22.0
|
||||||
|
(byte*) main::msg#4 msg zp[2]:2 202.0
|
||||||
|
|
||||||
|
zp[2]:2 [ main::msg#4 main::msg#1 main::msg#2 main::msg#3 ]
|
||||||
|
reg byte x [ main::i#2 main::i#1 ]
|
||||||
120
src/test/ref/strncat-0.asm
Normal file
120
src/test/ref/strncat-0.asm
Normal file
@ -0,0 +1,120 @@
|
|||||||
|
// Test strncat() implementation
|
||||||
|
.pc = $801 "Basic"
|
||||||
|
:BasicUpstart(main)
|
||||||
|
.pc = $80d "Program"
|
||||||
|
.label SCREEN = $400
|
||||||
|
main: {
|
||||||
|
// strncat(build, hello, 5)
|
||||||
|
lda #<hello
|
||||||
|
sta.z strncat.source
|
||||||
|
lda #>hello
|
||||||
|
sta.z strncat.source+1
|
||||||
|
jsr strncat
|
||||||
|
// strncat(build, space, 5)
|
||||||
|
lda #<space
|
||||||
|
sta.z strncat.source
|
||||||
|
lda #>space
|
||||||
|
sta.z strncat.source+1
|
||||||
|
jsr strncat
|
||||||
|
// strncat(build, world, 5)
|
||||||
|
lda #<world
|
||||||
|
sta.z strncat.source
|
||||||
|
lda #>world
|
||||||
|
sta.z strncat.source+1
|
||||||
|
jsr strncat
|
||||||
|
ldx #0
|
||||||
|
__b1:
|
||||||
|
// while(build[i])
|
||||||
|
lda build,x
|
||||||
|
cmp #0
|
||||||
|
bne __b2
|
||||||
|
// }
|
||||||
|
rts
|
||||||
|
__b2:
|
||||||
|
// SCREEN[i] = build[i]
|
||||||
|
lda build,x
|
||||||
|
sta SCREEN,x
|
||||||
|
// i++;
|
||||||
|
inx
|
||||||
|
jmp __b1
|
||||||
|
}
|
||||||
|
// Appends the first num characters of source to destination, plus a terminating null-character.
|
||||||
|
// If the length of the C string in source is less than num, only the content up to the terminating null-character is copied.
|
||||||
|
// strncat(byte* zp(2) source, word zp(6) num)
|
||||||
|
strncat: {
|
||||||
|
.label dst = 4
|
||||||
|
.label source = 2
|
||||||
|
.label num = 6
|
||||||
|
lda #<build
|
||||||
|
sta.z dst
|
||||||
|
lda #>build
|
||||||
|
sta.z dst+1
|
||||||
|
// Skip the existing string at dest
|
||||||
|
__b1:
|
||||||
|
// while (*dst)
|
||||||
|
ldy #0
|
||||||
|
lda (dst),y
|
||||||
|
cmp #0
|
||||||
|
bne __b2
|
||||||
|
lda #<5
|
||||||
|
sta.z num
|
||||||
|
tya
|
||||||
|
sta.z num+1
|
||||||
|
// Copy up to num chars from src
|
||||||
|
__b3:
|
||||||
|
// *dst = *source++
|
||||||
|
ldy #0
|
||||||
|
lda (source),y
|
||||||
|
sta (dst),y
|
||||||
|
// while (num && (*dst = *source++))
|
||||||
|
inc.z source
|
||||||
|
bne !+
|
||||||
|
inc.z source+1
|
||||||
|
!:
|
||||||
|
lda.z num
|
||||||
|
cmp #<0
|
||||||
|
bne !+
|
||||||
|
lda.z num+1
|
||||||
|
cmp #>0
|
||||||
|
beq __b5
|
||||||
|
!:
|
||||||
|
ldy #0
|
||||||
|
lda (dst),y
|
||||||
|
cmp #0
|
||||||
|
bne __b4
|
||||||
|
__b5:
|
||||||
|
// *dst = 0
|
||||||
|
// Add null-character
|
||||||
|
lda #0
|
||||||
|
tay
|
||||||
|
sta (dst),y
|
||||||
|
// }
|
||||||
|
rts
|
||||||
|
__b4:
|
||||||
|
// --num;
|
||||||
|
lda.z num
|
||||||
|
bne !+
|
||||||
|
dec.z num+1
|
||||||
|
!:
|
||||||
|
dec.z num
|
||||||
|
// ++dst;
|
||||||
|
inc.z dst
|
||||||
|
bne !+
|
||||||
|
inc.z dst+1
|
||||||
|
!:
|
||||||
|
jmp __b3
|
||||||
|
__b2:
|
||||||
|
// dst++;
|
||||||
|
inc.z dst
|
||||||
|
bne !+
|
||||||
|
inc.z dst+1
|
||||||
|
!:
|
||||||
|
jmp __b1
|
||||||
|
}
|
||||||
|
hello: .text "hello"
|
||||||
|
.byte 0
|
||||||
|
space: .text " "
|
||||||
|
.byte 0
|
||||||
|
world: .text "world war 3"
|
||||||
|
.byte 0
|
||||||
|
build: .fill $28, 0
|
||||||
67
src/test/ref/strncat-0.cfg
Normal file
67
src/test/ref/strncat-0.cfg
Normal file
@ -0,0 +1,67 @@
|
|||||||
|
@begin: scope:[] from
|
||||||
|
[0] phi()
|
||||||
|
to:@1
|
||||||
|
@1: scope:[] from @begin
|
||||||
|
[1] phi()
|
||||||
|
[2] call main
|
||||||
|
to:@end
|
||||||
|
@end: scope:[] from @1
|
||||||
|
[3] phi()
|
||||||
|
|
||||||
|
(void()) main()
|
||||||
|
main: scope:[main] from @1
|
||||||
|
[4] phi()
|
||||||
|
[5] call strncat
|
||||||
|
to:main::@3
|
||||||
|
main::@3: scope:[main] from main
|
||||||
|
[6] phi()
|
||||||
|
[7] call strncat
|
||||||
|
to:main::@4
|
||||||
|
main::@4: scope:[main] from main::@3
|
||||||
|
[8] phi()
|
||||||
|
[9] call strncat
|
||||||
|
to:main::@1
|
||||||
|
main::@1: scope:[main] from main::@2 main::@4
|
||||||
|
[10] (byte) main::i#2 ← phi( main::@2/(byte) main::i#1 main::@4/(byte) 0 )
|
||||||
|
[11] if((byte) 0!=*((const byte*) build + (byte) main::i#2)) goto main::@2
|
||||||
|
to:main::@return
|
||||||
|
main::@return: scope:[main] from main::@1
|
||||||
|
[12] return
|
||||||
|
to:@return
|
||||||
|
main::@2: scope:[main] from main::@1
|
||||||
|
[13] *((const nomodify byte*) SCREEN + (byte) main::i#2) ← *((const byte*) build + (byte) main::i#2)
|
||||||
|
[14] (byte) main::i#1 ← ++ (byte) main::i#2
|
||||||
|
to:main::@1
|
||||||
|
|
||||||
|
(byte*()) strncat((byte*) strncat::destination , (to_nomodify byte*) strncat::source , (word) strncat::num)
|
||||||
|
strncat: scope:[strncat] from main main::@3 main::@4
|
||||||
|
[15] (to_nomodify byte*) strncat::source#7 ← phi( main/(const byte*) hello main::@3/(const byte*) space main::@4/(const byte*) world )
|
||||||
|
to:strncat::@1
|
||||||
|
strncat::@1: scope:[strncat] from strncat strncat::@2
|
||||||
|
[16] (byte*) strncat::dst#3 ← phi( strncat/(const byte*) build strncat::@2/(byte*) strncat::dst#1 )
|
||||||
|
[17] if((byte) 0!=*((byte*) strncat::dst#3)) goto strncat::@2
|
||||||
|
to:strncat::@3
|
||||||
|
strncat::@3: scope:[strncat] from strncat::@1 strncat::@4
|
||||||
|
[18] (word) strncat::num#4 ← phi( strncat::@1/(byte) 5 strncat::@4/(word) strncat::num#3 )
|
||||||
|
[18] (byte*) strncat::dst#5 ← phi( strncat::@1/(byte*) strncat::dst#3 strncat::@4/(byte*) strncat::dst#2 )
|
||||||
|
[18] (to_nomodify byte*) strncat::source#4 ← phi( strncat::@1/(to_nomodify byte*) strncat::source#7 strncat::@4/(to_nomodify byte*) strncat::source#3 )
|
||||||
|
[19] *((byte*) strncat::dst#5) ← *((to_nomodify byte*) strncat::source#4)
|
||||||
|
[20] (to_nomodify byte*) strncat::source#3 ← ++ (to_nomodify byte*) strncat::source#4
|
||||||
|
[21] if((byte) 0==(word) strncat::num#4) goto strncat::@5
|
||||||
|
to:strncat::@6
|
||||||
|
strncat::@6: scope:[strncat] from strncat::@3
|
||||||
|
[22] if((byte) 0!=*((byte*) strncat::dst#5)) goto strncat::@4
|
||||||
|
to:strncat::@5
|
||||||
|
strncat::@5: scope:[strncat] from strncat::@3 strncat::@6
|
||||||
|
[23] *((byte*) strncat::dst#5) ← (byte) 0
|
||||||
|
to:strncat::@return
|
||||||
|
strncat::@return: scope:[strncat] from strncat::@5
|
||||||
|
[24] return
|
||||||
|
to:@return
|
||||||
|
strncat::@4: scope:[strncat] from strncat::@6
|
||||||
|
[25] (word) strncat::num#3 ← -- (word) strncat::num#4
|
||||||
|
[26] (byte*) strncat::dst#2 ← ++ (byte*) strncat::dst#5
|
||||||
|
to:strncat::@3
|
||||||
|
strncat::@2: scope:[strncat] from strncat::@1
|
||||||
|
[27] (byte*) strncat::dst#1 ← ++ (byte*) strncat::dst#3
|
||||||
|
to:strncat::@1
|
||||||
1181
src/test/ref/strncat-0.log
Normal file
1181
src/test/ref/strncat-0.log
Normal file
File diff suppressed because it is too large
Load Diff
44
src/test/ref/strncat-0.sym
Normal file
44
src/test/ref/strncat-0.sym
Normal file
@ -0,0 +1,44 @@
|
|||||||
|
(label) @1
|
||||||
|
(label) @begin
|
||||||
|
(label) @end
|
||||||
|
(const nomodify byte*) SCREEN = (byte*) 1024
|
||||||
|
(const byte*) build[(number) $28] = { fill( $28, 0) }
|
||||||
|
(const byte*) hello[] = (byte*) "hello"
|
||||||
|
(void()) main()
|
||||||
|
(label) main::@1
|
||||||
|
(label) main::@2
|
||||||
|
(label) main::@3
|
||||||
|
(label) main::@4
|
||||||
|
(label) main::@return
|
||||||
|
(byte) main::i
|
||||||
|
(byte) main::i#1 reg byte x 202.0
|
||||||
|
(byte) main::i#2 reg byte x 168.33333333333331
|
||||||
|
(const byte*) space[] = (byte*) " "
|
||||||
|
(byte*()) strncat((byte*) strncat::destination , (to_nomodify byte*) strncat::source , (word) strncat::num)
|
||||||
|
(label) strncat::@1
|
||||||
|
(label) strncat::@2
|
||||||
|
(label) strncat::@3
|
||||||
|
(label) strncat::@4
|
||||||
|
(label) strncat::@5
|
||||||
|
(label) strncat::@6
|
||||||
|
(label) strncat::@return
|
||||||
|
(byte*) strncat::destination
|
||||||
|
(byte*) strncat::dst
|
||||||
|
(byte*) strncat::dst#1 dst zp[2]:4 2002.0
|
||||||
|
(byte*) strncat::dst#2 dst zp[2]:4 2002.0
|
||||||
|
(byte*) strncat::dst#3 dst zp[2]:4 2002.0
|
||||||
|
(byte*) strncat::dst#5 dst zp[2]:4 851.0000000000001
|
||||||
|
(word) strncat::num
|
||||||
|
(word) strncat::num#3 num zp[2]:6 1001.0
|
||||||
|
(word) strncat::num#4 num zp[2]:6 600.5999999999999
|
||||||
|
(byte*) strncat::return
|
||||||
|
(to_nomodify byte*) strncat::source
|
||||||
|
(to_nomodify byte*) strncat::source#3 source zp[2]:2 400.4
|
||||||
|
(to_nomodify byte*) strncat::source#4 source zp[2]:2 2002.0
|
||||||
|
(to_nomodify byte*) strncat::source#7 source zp[2]:2 250.25
|
||||||
|
(const byte*) world[] = (byte*) "world war 3"
|
||||||
|
|
||||||
|
reg byte x [ main::i#2 main::i#1 ]
|
||||||
|
zp[2]:2 [ strncat::source#4 strncat::source#7 strncat::source#3 ]
|
||||||
|
zp[2]:4 [ strncat::dst#5 strncat::dst#3 strncat::dst#1 strncat::dst#2 ]
|
||||||
|
zp[2]:6 [ strncat::num#4 strncat::num#3 ]
|
||||||
Loading…
Reference in New Issue
Block a user