rt_gccstream/gcc/testsuite/gfortran.dg/reassoc_3.f90

21 lines
582 B
Fortran

! { dg-do compile }
! { dg-options "-O -ffast-math -fdump-tree-original -fdump-tree-optimized" }
! Verify we associate properly during folding
! Verify we propagate constants in the presence of PAREN_EXPR
function test(a)
real b, c, d
c = a
d = 5
b = (c + 5 - c)
b = (c + d - c)
test = a + b - 5
end
! { dg-final { scan-tree-dump "b = 5" "original" } }
! { dg-final { scan-tree-dump "c_. = .a" "optimized" } }
! { dg-final { scan-tree-dump "return c_.;" "optimized" } }
! { dg-final { cleanup-tree-dump "original" } }
! { dg-final { cleanup-tree-dump "optimized" } }