[flang-commits] [flang] fix optional wait wrongly treated as false (PR #78149)
Yi Wu via flang-commits
flang-commits at lists.llvm.org
Mon Jan 15 05:09:52 PST 2024
https://github.com/yi-wu-arm updated https://github.com/llvm/llvm-project/pull/78149
>From 485255cabdc766036537d6e0afa21051bcd0052e Mon Sep 17 00:00:00 2001
From: Yi Wu <yi.wu2 at arm.com>
Date: Mon, 15 Jan 2024 10:43:35 +0000
Subject: [PATCH 1/4] fix optional wait wrongly treated as false
When a optional bool in passed as optional, isStaticallyPresent() will actually return true.
By changing wait from asValue to asAddr and add some check can solve this.
---
flang/lib/Optimizer/Builder/IntrinsicCall.cpp | 32 ++++++++++++++---
.../execute_command_line-optional.f90 | 18 +++++-----
.../Lower/Intrinsics/execute_command_line.f90 | 35 +++++++++++--------
3 files changed, 57 insertions(+), 28 deletions(-)
diff --git a/flang/lib/Optimizer/Builder/IntrinsicCall.cpp b/flang/lib/Optimizer/Builder/IntrinsicCall.cpp
index ac7d4fbe23e673..206e5cfa8f4886 100644
--- a/flang/lib/Optimizer/Builder/IntrinsicCall.cpp
+++ b/flang/lib/Optimizer/Builder/IntrinsicCall.cpp
@@ -217,7 +217,7 @@ static constexpr IntrinsicHandler handlers[]{
{"execute_command_line",
&I::genExecuteCommandLine,
{{{"command", asBox},
- {"wait", asValue, handleDynamicOptional},
+ {"wait", asAddr, handleDynamicOptional},
{"exitstat", asBox, handleDynamicOptional},
{"cmdstat", asBox, handleDynamicOptional},
{"cmdmsg", asBox, handleDynamicOptional}}},
@@ -2913,7 +2913,8 @@ IntrinsicLibrary::genEoshift(mlir::Type resultType,
// EXECUTE_COMMAND_LINE
void IntrinsicLibrary::genExecuteCommandLine(
llvm::ArrayRef<fir::ExtendedValue> args) {
- assert(args.size() == 5);
+ // Optional KIND argument.
+ assert(args.size() >= 1);
mlir::Value command = fir::getBase(args[0]);
const fir::ExtendedValue &wait = args[1];
const fir::ExtendedValue &exitstat = args[2];
@@ -2925,9 +2926,29 @@ void IntrinsicLibrary::genExecuteCommandLine(
mlir::Type boxNoneTy = fir::BoxType::get(builder.getNoneType());
- mlir::Value waitBool = isStaticallyPresent(wait)
- ? fir::getBase(wait)
- : builder.createBool(loc, true);
+ mlir::Value waitBool;
+ if (isStaticallyAbsent(wait)) {
+ waitBool = builder.createBool(loc, true);
+ } else {
+ mlir::Type i1Ty = builder.getI1Type();
+ mlir::Value waitAddr = fir::getBase(wait);
+ mlir::Value waitIsPresentAtRuntime =
+ builder.genIsNotNullAddr(loc, waitAddr);
+ waitBool = builder
+ .genIfOp(loc, {i1Ty}, waitIsPresentAtRuntime,
+ /*withElseRegion=*/true)
+ .genThen([&]() {
+ auto waitLoad = builder.create<fir::LoadOp>(loc, waitAddr);
+ mlir::Value cast = builder.createConvert(loc, i1Ty, waitLoad);
+ builder.create<fir::ResultOp>(loc, cast);
+ })
+ .genElse([&]() {
+ mlir::Value trueVal = builder.createBool(loc, true);
+ builder.create<fir::ResultOp>(loc, trueVal);
+ })
+ .getResults()[0];
+ }
+
mlir::Value exitstatBox =
isStaticallyPresent(exitstat)
? fir::getBase(exitstat)
@@ -3185,6 +3206,7 @@ void IntrinsicLibrary::genGetEnvironmentVariable(
// Handle optional TRIM_NAME argument
mlir::Value trim;
+ llvm::outs() << isStaticallyPresent(trimName) << "\n";
if (isStaticallyAbsent(trimName)) {
trim = builder.createBool(loc, true);
} else {
diff --git a/flang/test/Lower/Intrinsics/execute_command_line-optional.f90 b/flang/test/Lower/Intrinsics/execute_command_line-optional.f90
index e51c0e5fca3004..57fbacc51cc84f 100644
--- a/flang/test/Lower/Intrinsics/execute_command_line-optional.f90
+++ b/flang/test/Lower/Intrinsics/execute_command_line-optional.f90
@@ -21,18 +21,10 @@ subroutine all_args_optional(command, isWait, exitVal, cmdVal, msg)
! CHECK-NEXT: %[[cmdmsgUnbox:.*]]:2 = fir.unboxchar %[[cmdmsgArg]] : (!fir.boxchar<1>) -> (!fir.ref<!fir.char<1,?>>, index)
! CHECK-NEXT: %[[cmdmsgDeclare:.*]] = fir.declare %[[cmdmsgUnbox]]#0 typeparams %[[cmdmsgUnbox]]#1 {fortran_attrs = #fir.var_attrs<optional>, uniq_name = "_QFall_args_optionalEmsg"} : (!fir.ref<!fir.char<1,?>>, index) -> !fir.ref<!fir.char<1,?>>
! CHECK-NEXT: %[[cmdmsgBoxTemp:.*]] = fir.emboxchar %[[cmdmsgDeclare]], %[[cmdmsgUnbox]]#1 : (!fir.ref<!fir.char<1,?>>, index) -> !fir.boxchar<1>
-! CHECK-NEXT: %[[waitIsPresent:.*]] = fir.is_present %[[waitDeclare]] : (!fir.ref<!fir.logical<4>>) -> i1
! CHECK-NEXT: %[[exitstatIsPresent:.*]] = fir.is_present %[[exitstatDeclare]] : (!fir.ref<i32>) -> i1
! CHECK-NEXT: %[[cmdstatIsPresent:.*]] = fir.is_present %[[cmdstatDeclare]] : (!fir.ref<i32>) -> i1
! CHECK-NEXT: %[[cmdmsgIsPresent:.*]] = fir.is_present %[[cmdmsgBoxTemp]] : (!fir.boxchar<1>) -> i1
! CHECK-NEXT: %[[commandBox:.*]] = fir.embox %[[commandDeclare]] typeparams %[[commandUnbox]]#1 : (!fir.ref<!fir.char<1,?>>, index) -> !fir.box<!fir.char<1,?>>
-! CHECK-NEXT: %[[waitLoaded:.*]] = fir.if %[[waitIsPresent]] -> (!fir.logical<4>) {
-! CHECK-NEXT: %[[VAL_31:.*]] = fir.load %[[waitDeclare]] : !fir.ref<!fir.logical<4>>
-! CHECK-NEXT: fir.result %[[VAL_31]] : !fir.logical<4>
-! CHECK-NEXT: } else {
-! CHECK-NEXT: %[[VAL_31:.*]] = fir.convert %false : (i1) -> !fir.logical<4>
-! CHECK-NEXT: fir.result %[[VAL_31]] : !fir.logical<4>
-! CHECK-NEXT: }
! CHECK-NEXT: %[[exitstatArgBox:.*]] = fir.embox %[[exitstatDeclare]] : (!fir.ref<i32>) -> !fir.box<i32>
! CHECK-NEXT: %[[absentBoxi32:.*]] = fir.absent !fir.box<i32>
! CHECK-NEXT: %[[exitstatBox:.*]] = arith.select %[[exitstatIsPresent]], %[[exitstatArgBox]], %[[absentBoxi32]] : !fir.box<i32>
@@ -41,8 +33,16 @@ subroutine all_args_optional(command, isWait, exitVal, cmdVal, msg)
! CHECK-NEXT: %[[cmdmsgArgBox:.*]] = fir.embox %[[cmdmsgDeclare]] typeparams %[[cmdmsgUnbox]]#1 : (!fir.ref<!fir.char<1,?>>, index) -> !fir.box<!fir.char<1,?>>
! CHECK-NEXT: %[[absentBox:.*]] = fir.absent !fir.box<!fir.char<1,?>>
! CHECK-NEXT: %[[cmdmsgBox:.*]] = arith.select %[[cmdmsgIsPresent]], %[[cmdmsgArgBox]], %[[absentBox]] : !fir.box<!fir.char<1,?>>
+! CHECK-NEXT: %[[waitCast:.*]] = fir.convert %[[waitDeclare]] : (!fir.ref<!fir.logical<4>>) -> i64
+! CHECK-NEXT: %[[waitPresent:.*]] = arith.cmpi ne, %[[waitCast]], %c0_i64 : i64
+! CHECK-NEXT: %[[wait:.*]] = fir.if %[[waitPresent]] -> (i1) {
+! CHECK-NEXT: %[[waitLoaded:.*]] = fir.load %[[waitDeclare]] : !fir.ref<!fir.logical<4>>
+! CHECK-NEXT: %[[waitTrueVal:.*]] = fir.convert %[[waitLoaded]] : (!fir.logical<4>) -> i1
+! CHECK-NEXT: fir.result %[[waitTrueVal]] : i1
+! CHECK-NEXT: } else {
+! CHECK-NEXT: fir.result %true : i1
+! CHECK-NEXT: }
! CHECK: %[[command:.*]] = fir.convert %[[commandBox]] : (!fir.box<!fir.char<1,?>>) -> !fir.box<none>
-! CHECK-NEXT: %[[wait:.*]] = fir.convert %[[waitLoaded]] : (!fir.logical<4>) -> i1
! CHECK-NEXT: %[[exitstat:.*]] = fir.convert %[[exitstatBox]] : (!fir.box<i32>) -> !fir.box<none>
! CHECK-NEXT: %[[cmdstat:.*]] = fir.convert %[[cmdstatBox]] : (!fir.box<i32>) -> !fir.box<none>
! CHECK-NEXT: %[[cmdmsg:.*]] = fir.convert %[[cmdmsgBox]] : (!fir.box<!fir.char<1,?>>) -> !fir.box<none>
diff --git a/flang/test/Lower/Intrinsics/execute_command_line.f90 b/flang/test/Lower/Intrinsics/execute_command_line.f90
index 1b65bbd5e1550c..92234c39110ca4 100644
--- a/flang/test/Lower/Intrinsics/execute_command_line.f90
+++ b/flang/test/Lower/Intrinsics/execute_command_line.f90
@@ -11,26 +11,33 @@ subroutine all_args(command, isWait, exitVal, cmdVal, msg)
INTEGER :: exitVal, cmdVal
LOGICAL :: isWait
call execute_command_line(command, isWait, exitVal, cmdVal, msg)
-! CHECK: %[[cmdstatsDeclear:.*]] = fir.declare %[[cmdstatArg]] {uniq_name = "_QFall_argsEcmdval"} : (!fir.ref<i32>) -> !fir.ref<i32>
+! CHECK: %[[cmdstatsDeclare:.*]] = fir.declare %[[cmdstatArg]] {uniq_name = "_QFall_argsEcmdval"} : (!fir.ref<i32>) -> !fir.ref<i32>
! CHECK-NEXT: %[[commandUnbox:.*]]:2 = fir.unboxchar %[[commandArg]] : (!fir.boxchar<1>) -> (!fir.ref<!fir.char<1,?>>, index)
! CHECK-NEXT: %[[commandCast:.*]] = fir.convert %[[commandUnbox]]#0 : (!fir.ref<!fir.char<1,?>>) -> !fir.ref<!fir.char<1,30>>
-! CHECK-NEXT: %[[commandDeclear:.*]] = fir.declare %[[commandCast]] typeparams %c30 {uniq_name = "_QFall_argsEcommand"} : (!fir.ref<!fir.char<1,30>>, index) -> !fir.ref<!fir.char<1,30>>
-! CHECK-NEXT: %[[exitstatDeclear:.*]] = fir.declare %[[exitstatArg]] {uniq_name = "_QFall_argsEexitval"} : (!fir.ref<i32>) -> !fir.ref<i32>
-! CHECK-NEXT: %[[waitDeclear:.*]] = fir.declare %[[waitArg]] {uniq_name = "_QFall_argsEiswait"} : (!fir.ref<!fir.logical<4>>) -> !fir.ref<!fir.logical<4>>
+! CHECK-NEXT: %[[commandDeclare:.*]] = fir.declare %[[commandCast]] typeparams %c30 {uniq_name = "_QFall_argsEcommand"} : (!fir.ref<!fir.char<1,30>>, index) -> !fir.ref<!fir.char<1,30>>
+! CHECK-NEXT: %[[exitstatDeclare:.*]] = fir.declare %[[exitstatArg]] {uniq_name = "_QFall_argsEexitval"} : (!fir.ref<i32>) -> !fir.ref<i32>
+! CHECK-NEXT: %[[waitDeclare:.*]] = fir.declare %[[waitArg]] {uniq_name = "_QFall_argsEiswait"} : (!fir.ref<!fir.logical<4>>) -> !fir.ref<!fir.logical<4>>
! CHECK-NEXT: %[[cmdmsgUnbox:.*]]:2 = fir.unboxchar %[[cmdmsgArg]] : (!fir.boxchar<1>) -> (!fir.ref<!fir.char<1,?>>, index)
! CHECK-NEXT: %[[cmdmsgCast:.*]] = fir.convert %[[cmdmsgUnbox]]#0 : (!fir.ref<!fir.char<1,?>>) -> !fir.ref<!fir.char<1,30>>
-! CHECK-NEXT: %[[cmdmsgDeclear:.*]] = fir.declare %[[cmdmsgCast]] typeparams %c30 {uniq_name = "_QFall_argsEmsg"} : (!fir.ref<!fir.char<1,30>>, index) -> !fir.ref<!fir.char<1,30>>
-! CHECK-NEXT: %[[commandBox:.*]] = fir.embox %[[commandDeclear]] : (!fir.ref<!fir.char<1,30>>) -> !fir.box<!fir.char<1,30>>
-! CHECK-NEXT: %[[waitLoaded:.*]] = fir.load %[[waitDeclear]] : !fir.ref<!fir.logical<4>>
-! CHECK-NEXT: %[[exitstatBox:.*]] = fir.embox %[[exitstatDeclear]] : (!fir.ref<i32>) -> !fir.box<i32>
-! CHECK-NEXT: %[[cmdstatBox:.*]] = fir.embox %[[cmdstatsDeclear]] : (!fir.ref<i32>) -> !fir.box<i32>
-! CHECK-NEXT: %[[cmdmsgBox:.*]] = fir.embox %[[cmdmsgDeclear]] : (!fir.ref<!fir.char<1,30>>) -> !fir.box<!fir.char<1,30>>
+! CHECK-NEXT: %[[cmdmsgDeclare:.*]] = fir.declare %[[cmdmsgCast]] typeparams %c30 {uniq_name = "_QFall_argsEmsg"} : (!fir.ref<!fir.char<1,30>>, index) -> !fir.ref<!fir.char<1,30>>
+! CHECK-NEXT: %[[commandBox:.*]] = fir.embox %[[commandDeclare]] : (!fir.ref<!fir.char<1,30>>) -> !fir.box<!fir.char<1,30>>
+! CHECK-NEXT: %[[exitstatBox:.*]] = fir.embox %[[exitstatDeclare]] : (!fir.ref<i32>) -> !fir.box<i32>
+! CHECK-NEXT: %[[cmdstatBox:.*]] = fir.embox %[[cmdstatsDeclare]] : (!fir.ref<i32>) -> !fir.box<i32>
+! CHECK-NEXT: %[[cmdmsgBox:.*]] = fir.embox %[[cmdmsgDeclare]] : (!fir.ref<!fir.char<1,30>>) -> !fir.box<!fir.char<1,30>>
+! CHECK-NEXT: %[[waitCast:.*]] = fir.convert %[[waitDeclare]] : (!fir.ref<!fir.logical<4>>) -> i64
+! CHECK-NEXT: %[[waitPresent:.*]] = arith.cmpi ne, %[[waitCast]], %c0_i64 : i64
+! CHECK-NEXT: %[[wait:.*]] = fir.if %[[waitPresent]] -> (i1) {
+! CHECK-NEXT: %[[waitLoaded:.*]] = fir.load %[[waitDeclare]] : !fir.ref<!fir.logical<4>>
+! CHECK-NEXT: %[[waitTrueVal:.*]] = fir.convert %[[waitLoaded]] : (!fir.logical<4>) -> i1
+! CHECK-NEXT: fir.result %[[waitTrueVal]] : i1
+! CHECK-NEXT: } else {
+! CHECK-NEXT: fir.result %true : i1
+! CHECK-NEXT: }
! CHECK: %[[command:.*]] = fir.convert %[[commandBox]] : (!fir.box<!fir.char<1,30>>) -> !fir.box<none>
-! CHECK-NEXT: %[[wait:.*]] = fir.convert %[[waitLoaded]] : (!fir.logical<4>) -> i1
! CHECK-NEXT: %[[exitstat:.*]] = fir.convert %[[exitstatBox]] : (!fir.box<i32>) -> !fir.box<none>
! CHECK-NEXT: %[[cmdstat:.*]] = fir.convert %[[cmdstatBox]] : (!fir.box<i32>) -> !fir.box<none>
! CHECK-NEXT: %[[cmdmsg:.*]] = fir.convert %[[cmdmsgBox]] : (!fir.box<!fir.char<1,30>>) -> !fir.box<none>
-! CHECK: %[[VAL_21:.*]] = fir.call @_FortranAExecuteCommandLine(%[[command]], %[[wait]], %[[exitstat]], %[[cmdstat]], %[[cmdmsg]], %[[VAL_20:.*]], %c13_i32) fastmath<contract> : (!fir.box<none>, i1, !fir.box<none>, !fir.box<none>, !fir.box<none>, !fir.ref<i8>, i32) -> none
+! CHECK: %[[VAL_22:.*]] = fir.call @_FortranAExecuteCommandLine(%[[command]], %[[wait]], %[[exitstat]], %[[cmdstat]], %[[cmdmsg]], %[[VAL_20:.*]], %c13_i32) fastmath<contract> : (!fir.box<none>, i1, !fir.box<none>, !fir.box<none>, !fir.box<none>, !fir.ref<i8>, i32) -> none
! CHECK-NEXT: return
end subroutine all_args
@@ -39,7 +46,7 @@ end subroutine all_args
subroutine only_command_default_wait_true(command)
CHARACTER(30) :: command
call execute_command_line(command)
-! CHECK-NEXT: %c41_i32 = arith.constant 41 : i32
+! CHECK-NEXT: %c48_i32 = arith.constant 48 : i32
! CHECK-NEXT: %true = arith.constant true
! CHECK-NEXT: %c30 = arith.constant 30 : index
! CHECK-NEXT: %[[commandUnbox:.*]]:2 = fir.unboxchar %[[cmdArg]] : (!fir.boxchar<1>) -> (!fir.ref<!fir.char<1,?>>, index)
@@ -48,6 +55,6 @@ subroutine only_command_default_wait_true(command)
! CHECK-NEXT: %[[commandBox:.*]] = fir.embox %[[commandDeclare]] : (!fir.ref<!fir.char<1,30>>) -> !fir.box<!fir.char<1,30>>
! CHECK-NEXT: %[[absent:.*]] = fir.absent !fir.box<none>
! CHECK: %[[command:.*]] = fir.convert %[[commandBox]] : (!fir.box<!fir.char<1,30>>) -> !fir.box<none>
-! CHECK: %[[VAL_21:.*]] = fir.call @_FortranAExecuteCommandLine(%[[command]], %true, %[[absent]], %[[absent]], %[[absent]], %[[VAL_7:.*]], %c41_i32) fastmath<contract> : (!fir.box<none>, i1, !fir.box<none>, !fir.box<none>, !fir.box<none>, !fir.ref<i8>, i32) -> none
+! CHECK: %[[VAL_8:.*]] = fir.call @_FortranAExecuteCommandLine(%[[command]], %true, %[[absent]], %[[absent]], %[[absent]], %[[VAL_7:.*]], %c48_i32) fastmath<contract> : (!fir.box<none>, i1, !fir.box<none>, !fir.box<none>, !fir.box<none>, !fir.ref<i8>, i32) -> none
! CHECK-NEXT: return
end subroutine only_command_default_wait_true
>From 04aeae0cb3d1f682670b98b1ff4763eb8cb51131 Mon Sep 17 00:00:00 2001
From: Yi Wu <yi.wu2 at arm.com>
Date: Mon, 15 Jan 2024 11:32:24 +0000
Subject: [PATCH 2/4] clang-format
---
flang/lib/Optimizer/Builder/IntrinsicCall.cpp | 25 ++++++++++---------
1 file changed, 13 insertions(+), 12 deletions(-)
diff --git a/flang/lib/Optimizer/Builder/IntrinsicCall.cpp b/flang/lib/Optimizer/Builder/IntrinsicCall.cpp
index 206e5cfa8f4886..ace421ec0f9184 100644
--- a/flang/lib/Optimizer/Builder/IntrinsicCall.cpp
+++ b/flang/lib/Optimizer/Builder/IntrinsicCall.cpp
@@ -2935,18 +2935,19 @@ void IntrinsicLibrary::genExecuteCommandLine(
mlir::Value waitIsPresentAtRuntime =
builder.genIsNotNullAddr(loc, waitAddr);
waitBool = builder
- .genIfOp(loc, {i1Ty}, waitIsPresentAtRuntime,
- /*withElseRegion=*/true)
- .genThen([&]() {
- auto waitLoad = builder.create<fir::LoadOp>(loc, waitAddr);
- mlir::Value cast = builder.createConvert(loc, i1Ty, waitLoad);
- builder.create<fir::ResultOp>(loc, cast);
- })
- .genElse([&]() {
- mlir::Value trueVal = builder.createBool(loc, true);
- builder.create<fir::ResultOp>(loc, trueVal);
- })
- .getResults()[0];
+ .genIfOp(loc, {i1Ty}, waitIsPresentAtRuntime,
+ /*withElseRegion=*/true)
+ .genThen([&]() {
+ auto waitLoad = builder.create<fir::LoadOp>(loc, waitAddr);
+ mlir::Value cast =
+ builder.createConvert(loc, i1Ty, waitLoad);
+ builder.create<fir::ResultOp>(loc, cast);
+ })
+ .genElse([&]() {
+ mlir::Value trueVal = builder.createBool(loc, true);
+ builder.create<fir::ResultOp>(loc, trueVal);
+ })
+ .getResults()[0];
}
mlir::Value exitstatBox =
>From ba402a9059bca35a865e6fbfbfc6c6a066d31e0c Mon Sep 17 00:00:00 2001
From: Yi Wu <yi.wu2 at arm.com>
Date: Mon, 15 Jan 2024 11:48:33 +0000
Subject: [PATCH 3/4] remove debugging line
---
flang/lib/Optimizer/Builder/IntrinsicCall.cpp | 1 -
1 file changed, 1 deletion(-)
diff --git a/flang/lib/Optimizer/Builder/IntrinsicCall.cpp b/flang/lib/Optimizer/Builder/IntrinsicCall.cpp
index ace421ec0f9184..f958e428f9bebf 100644
--- a/flang/lib/Optimizer/Builder/IntrinsicCall.cpp
+++ b/flang/lib/Optimizer/Builder/IntrinsicCall.cpp
@@ -3207,7 +3207,6 @@ void IntrinsicLibrary::genGetEnvironmentVariable(
// Handle optional TRIM_NAME argument
mlir::Value trim;
- llvm::outs() << isStaticallyPresent(trimName) << "\n";
if (isStaticallyAbsent(trimName)) {
trim = builder.createBool(loc, true);
} else {
>From 1461547323eff828514424d75afdf7bbea97f21f Mon Sep 17 00:00:00 2001
From: Yi Wu <yi.wu2 at arm.com>
Date: Mon, 15 Jan 2024 13:08:53 +0000
Subject: [PATCH 4/4] assertion and test fixes
---
flang/lib/Optimizer/Builder/IntrinsicCall.cpp | 4 ++--
flang/test/Lower/Intrinsics/execute_command_line.f90 | 8 ++++----
2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/flang/lib/Optimizer/Builder/IntrinsicCall.cpp b/flang/lib/Optimizer/Builder/IntrinsicCall.cpp
index f958e428f9bebf..e982939fe58c95 100644
--- a/flang/lib/Optimizer/Builder/IntrinsicCall.cpp
+++ b/flang/lib/Optimizer/Builder/IntrinsicCall.cpp
@@ -2913,8 +2913,8 @@ IntrinsicLibrary::genEoshift(mlir::Type resultType,
// EXECUTE_COMMAND_LINE
void IntrinsicLibrary::genExecuteCommandLine(
llvm::ArrayRef<fir::ExtendedValue> args) {
- // Optional KIND argument.
- assert(args.size() >= 1);
+ // Optional arguments: wait, exitstat, cmdstat, cmdmsg.
+ assert(args.size() >= 1 && args.size() <= 5);
mlir::Value command = fir::getBase(args[0]);
const fir::ExtendedValue &wait = args[1];
const fir::ExtendedValue &exitstat = args[2];
diff --git a/flang/test/Lower/Intrinsics/execute_command_line.f90 b/flang/test/Lower/Intrinsics/execute_command_line.f90
index 92234c39110ca4..0935f2ced900f9 100644
--- a/flang/test/Lower/Intrinsics/execute_command_line.f90
+++ b/flang/test/Lower/Intrinsics/execute_command_line.f90
@@ -46,15 +46,15 @@ end subroutine all_args
subroutine only_command_default_wait_true(command)
CHARACTER(30) :: command
call execute_command_line(command)
-! CHECK-NEXT: %c48_i32 = arith.constant 48 : i32
+! CHECK-NEXT: %[[c48:.*]] = arith.constant 48 : i32
! CHECK-NEXT: %true = arith.constant true
-! CHECK-NEXT: %c30 = arith.constant 30 : index
+! CHECK-NEXT: %[[c30:.*]] = arith.constant 30 : index
! CHECK-NEXT: %[[commandUnbox:.*]]:2 = fir.unboxchar %[[cmdArg]] : (!fir.boxchar<1>) -> (!fir.ref<!fir.char<1,?>>, index)
! CHECK-NEXT: %[[commandCast:.*]] = fir.convert %[[commandUnbox]]#0 : (!fir.ref<!fir.char<1,?>>) -> !fir.ref<!fir.char<1,30>>
-! CHECK-NEXT: %[[commandDeclare:.*]] = fir.declare %[[commandCast]] typeparams %c30 {uniq_name = "_QFonly_command_default_wait_trueEcommand"} : (!fir.ref<!fir.char<1,30>>, index) -> !fir.ref<!fir.char<1,30>>
+! CHECK-NEXT: %[[commandDeclare:.*]] = fir.declare %[[commandCast]] typeparams %c[[c30]] {uniq_name = "_QFonly_command_default_wait_trueEcommand"} : (!fir.ref<!fir.char<1,30>>, index) -> !fir.ref<!fir.char<1,30>>
! CHECK-NEXT: %[[commandBox:.*]] = fir.embox %[[commandDeclare]] : (!fir.ref<!fir.char<1,30>>) -> !fir.box<!fir.char<1,30>>
! CHECK-NEXT: %[[absent:.*]] = fir.absent !fir.box<none>
! CHECK: %[[command:.*]] = fir.convert %[[commandBox]] : (!fir.box<!fir.char<1,30>>) -> !fir.box<none>
-! CHECK: %[[VAL_8:.*]] = fir.call @_FortranAExecuteCommandLine(%[[command]], %true, %[[absent]], %[[absent]], %[[absent]], %[[VAL_7:.*]], %c48_i32) fastmath<contract> : (!fir.box<none>, i1, !fir.box<none>, !fir.box<none>, !fir.box<none>, !fir.ref<i8>, i32) -> none
+! CHECK: %[[VAL_8:.*]] = fir.call @_FortranAExecuteCommandLine(%[[command]], %true, %[[absent]], %[[absent]], %[[absent]], %[[VAL_7:.*]], %[[c48]]) fastmath<contract> : (!fir.box<none>, i1, !fir.box<none>, !fir.box<none>, !fir.box<none>, !fir.ref<i8>, i32) -> none
! CHECK-NEXT: return
end subroutine only_command_default_wait_true
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