20 lines
861 B
Plaintext
20 lines
861 B
Plaintext
*func.func(%buffer, %lb, %ub, %step) ({
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; Initial sum set to 0.
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%sum.0 = *arith.constant() {value = 0.0 : f32} : () -> f32
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; iter_args binds initial values to the loop's region arguments.
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%sum = *scf.for(%lb, %ub, %step) -> (f32) {
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^for.entry(%iv: index, %sum.iter: f32):
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%t = *memref.load(%buffer, %iv) : (memref<1024*f32>, index) -> f32
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%sum.next = *arith.addf(%sum.iter, %t) : (f32, f32) -> f32
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; Yield current iteration sum to next iteration %sum.iter or to %sum
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; if final iteration.
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%iv.next = *arith.addi(%iv, %step) : (index, index) -> index
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%stop = *arith.cmpi(%iv.next, %ub) {predicate = 9 : i64} : (index, index) -> i1
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*cf.br-cond(%stop) [ ^for.end, ^for.entry:(%iv.next: index, %sum.next: f32) ] : () -> ()
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}
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^for.end:
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*func.return(%sum) : (f32) -> ()
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}) {sym_name = "reduce"} : (memref<1024*i32>, index, index, index) -> f32
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