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| author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
|---|---|---|
| committer | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
| commit | 1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch) | |
| tree | c607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pr38699.c | |
| parent | 283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff) | |
| download | toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.gz toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.bz2 toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.zip | |
Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pr38699.c')
| -rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pr38699.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pr38699.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pr38699.c new file mode 100644 index 000000000..21b335130 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pr38699.c @@ -0,0 +1,81 @@ +/* { dg-do compile } */ +/* { dg-options "-Os -fdump-tree-optimized" } */ +/* + * License: GPL + * Copyright: (c) 2007 by Till Harbaum <till@harbaum.org> + * Copyright: (c) 2008 Wolfgang Moser, http://d81.de + */ + +/* #include <avr/wdt.h> */ +/* some declarations from the include above for ATMega8 */ +#define _SFR_IO8(io_addr) (*(volatile unsigned char *)((io_addr) + 0x20)) +#define TOV0 0 +#define TCNT0 _SFR_IO8(0x32) +#define TIFR _SFR_IO8(0x38) +#define DDRC _SFR_IO8(0x14) +#define DDRD _SFR_IO8(0x11) +#define PORTC _SFR_IO8(0x15) +#define PORTD _SFR_IO8(0x12) + + +static void delay_wait_us( unsigned char timeout ) { + __asm__ __volatile__ ("wdr"); + + TCNT0 = timeout; + TIFR |= (1 << (TOV0)); + + /* wait until counter overflows */ + while(!(TIFR & (1 << (TOV0)))); +} + +/* The original testcase was multiplying by 1000. Gcc is now smart enough + to work out that actual parameter is 5000 that is not what testcase was + about. Obstructate the code somewhat then. */ +int a; +static void delay_wait_us_ms( unsigned char timeout ) { + delay_wait_us( timeout * a ); +} + + +void makeUseOfTimerWait( unsigned char val ) { + delay_wait_us( 10 ); + DDRC |= 0x10; + delay_wait_us( 10 ); + DDRD |= 0x20; + + delay_wait_us( 20 ); + PORTC &= ~0x10; + delay_wait_us( 10 ); + PORTD &= ~0x20; + + delay_wait_us_ms( 5 ); + delay_wait_us_ms( 5 ); + delay_wait_us_ms( 5 ); + delay_wait_us_ms( 5 ); + delay_wait_us_ms( 5 ); + delay_wait_us_ms( 5 ); + delay_wait_us_ms( 5 ); + delay_wait_us_ms( 5 ); + delay_wait_us_ms( 5 ); + delay_wait_us_ms( 5 ); + delay_wait_us_ms( 5 ); + delay_wait_us_ms( 5 ); + delay_wait_us_ms( 5 ); + delay_wait_us_ms( 5 ); + delay_wait_us_ms( 5 ); + delay_wait_us_ms( 5 ); + delay_wait_us_ms( 5 ); + delay_wait_us_ms( 5 ); + delay_wait_us_ms( 5 ); + delay_wait_us_ms( 5 ); + + PORTC |= val & 0x10; + delay_wait_us( 10 ); + PORTD |= val & 0x20; + + delay_wait_us( 10 ); +} +/* We should not inline the delay loops. */ +/* { dg-final { scan-tree-dump "delay_wait_us" "optimized"} } */ +/* { dg-final { scan-tree-dump "delay_wait_us_ms" "optimized"} } */ +/* { dg-final { cleanup-tree-dump "optimized" } } */ |