Fix ParallelForOMP introduced in #4595 (#4604)

WeiqunZhang · web-flow · commit c254bcc6ee75 · 2025-08-11T12:05:55.000-07:00
GCC does not allow omp collapse on loops marked with ivdep.
diff --git a/Src/Base/AMReX_GpuLaunch.H b/Src/Base/AMReX_GpuLaunch.H
@@ -316,7 +316,6 @@ void ParallelForOMP (Box const& box, T ncomp, L const& f) noexcept
 #if (AMREX_SPACEDIM == 1)
 #pragma omp parallel for collapse(2)
     for (T n = 0; n < ncomp; ++n) {
-        AMREX_PRAGMA_SIMD
         for (int i = lo.x; i <= hi.x; ++i) {
             f(i,0,0,n);
         }

Original file line number	Diff line number	Diff line change
`@@ -316,7 +316,6 @@ void ParallelForOMP (Box const& box, T ncomp, L const& f) noexcept`
`316`	`316`	`#if (AMREX_SPACEDIM == 1)`
`317`	`317`	`#pragma omp parallel for collapse(2)`
`318`	`318`	`for (T n = 0; n < ncomp; ++n) {`
`319`		`- AMREX_PRAGMA_SIMD`
`320`	`319`	`for (int i = lo.x; i <= hi.x; ++i) {`
`321`	`320`	`f(i,0,0,n);`
`322`	`321`	`}`