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Source file test/fixedbugs/bug440_32.go

Documentation: test/fixedbugs

     1  // run
     2  
     3  // Test for 8g register move bug.  The optimizer gets confused
     4  // about 16- vs 32-bit moves during splitContractIndex.
     5  
     6  // Issue 3910.
     7  
     8  package main
     9  
    10  func main() {
    11  	const c = 0x12345678
    12  	index, n, offset := splitContractIndex(c)
    13  	if index != int((c&0xffff)>>5) || n != int(c&(1<<5-1)) || offset != (c>>16)&(1<<14-1) {
    14  		println("BUG", index, n, offset)
    15  	}
    16  }
    17  
    18  func splitContractIndex(ce uint32) (index, n, offset int) {
    19  	h := uint16(ce)
    20  	return int(h >> 5), int(h & (1<<5 - 1)), int(ce>>16) & (1<<14 - 1)
    21  }
    22  

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