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Fix const step in loop #2501

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Merged
merged 2 commits into from
Feb 7, 2024
Merged

Fix const step in loop #2501

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324bd3b
Fix const step in loop
ubaidsk Feb 7, 2024
b26d942
TEST: Add for const step in loop
ubaidsk Feb 7, 2024
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1 change: 1 addition & 0 deletions integration_tests/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -509,6 +509,7 @@ RUN(NAME loop_04 LABELS cpython llvm c)
RUN(NAME loop_05 LABELS cpython llvm c)
RUN(NAME loop_06 LABELS cpython llvm c NOFAST)
RUN(NAME loop_07 LABELS cpython llvm c)
RUN(NAME loop_08 LABELS cpython llvm c)
RUN(NAME if_01 LABELS cpython llvm c wasm wasm_x86 wasm_x64)
RUN(NAME if_02 LABELS cpython llvm c wasm wasm_x86 wasm_x64)
RUN(NAME if_03 FAIL LABELS cpython llvm c NOFAST)
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13 changes: 13 additions & 0 deletions integration_tests/loop_08.py
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@@ -0,0 +1,13 @@
from lpython import i32, Const

def main0():
i: i32
n: Const[i32] = 10
M2: Const[i32] = 2
y: i32 = 0
for i in range(0, n, M2): # each M2 block in A cols and B rows # !!!!!!!!!!!!!!
y = y + 2
print(y)
assert(y == 10)

main0()
3 changes: 2 additions & 1 deletion src/libasr/pass/pass_utils.cpp
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Expand Up @@ -893,7 +893,8 @@ namespace LCompilers {
if( comp == -1 ) {
int increment;
bool not_constant_inc = false;
if (!ASRUtils::is_integer(*ASRUtils::expr_type(c))) {
if (!ASRUtils::is_integer(*ASRUtils::type_get_past_const(
ASRUtils::expr_type(c)))) {
throw LCompilersException("Do loop increment type should be an integer");
}
if (c->type == ASR::exprType::IntegerConstant) {
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3 changes: 2 additions & 1 deletion src/lpython/semantics/python_ast_to_asr.cpp
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Expand Up @@ -5301,7 +5301,8 @@ class BodyVisitor : public CommonVisitor<BodyVisitor> {
head.m_start = loop_start;
head.m_increment = inc;

if( !ASR::is_a<ASR::Integer_t>(*ASRUtils::expr_type(inc)) ) {
if( !ASR::is_a<ASR::Integer_t>(*ASRUtils::type_get_past_const(
ASRUtils::expr_type(inc))) ) {
throw SemanticError("For loop increment type should be Integer.", loc);
}
ASR::expr_t *inc_value = ASRUtils::expr_value(inc);
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