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42 lines
1.6 KiB
Plaintext
42 lines
1.6 KiB
Plaintext
// RUN: fir-opt --stack-arrays %s | FileCheck %s
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// Test that an allocmem inside a fir.if is not hoisted past a
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// stackrestore when the size operand is shared across scopes.
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func.func @nested_if_scope(%arg0: index, %arg1: i1) {
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%c0 = arith.constant 0 : index
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%c0_i32 = arith.constant 0 : i32
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%size = arith.addi %arg0, %arg0 : index
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%sp1 = llvm.intr.stacksave : !llvm.ptr
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%mem1 = fir.allocmem !fir.array<?xi32>, %size
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%ref1 = fir.convert %mem1 : (!fir.heap<!fir.array<?xi32>>) -> !fir.ref<!fir.array<?xi32>>
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%elt1 = fir.coordinate_of %ref1, %c0 : (!fir.ref<!fir.array<?xi32>>, index) -> !fir.ref<i32>
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fir.store %c0_i32 to %elt1 : !fir.ref<i32>
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fir.freemem %mem1 : !fir.heap<!fir.array<?xi32>>
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llvm.intr.stackrestore %sp1 : !llvm.ptr
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fir.if %arg1 {
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%sp2 = llvm.intr.stacksave : !llvm.ptr
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%mem2 = fir.allocmem !fir.array<?xi32>, %size
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%ref2 = fir.convert %mem2 : (!fir.heap<!fir.array<?xi32>>) -> !fir.ref<!fir.array<?xi32>>
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%elt2 = fir.coordinate_of %ref2, %c0 : (!fir.ref<!fir.array<?xi32>>, index) -> !fir.ref<i32>
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fir.store %c0_i32 to %elt2 : !fir.ref<i32>
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fir.freemem %mem2 : !fir.heap<!fir.array<?xi32>>
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llvm.intr.stackrestore %sp2 : !llvm.ptr
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}
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return
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}
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// Second alloca must stay inside the fir.if.
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// CHECK-LABEL: func.func @nested_if_scope(
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// CHECK: %[[SIZE:.*]] = arith.addi
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// CHECK: fir.alloca !fir.array<?xi32>, %[[SIZE]]
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// CHECK: llvm.intr.stacksave
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// CHECK: llvm.intr.stackrestore
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// CHECK: fir.if
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// CHECK: llvm.intr.stacksave
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// CHECK: fir.alloca !fir.array<?xi32>, %[[SIZE]]
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// CHECK: llvm.intr.stackrestore
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