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TheRock/compiler/amd-llvm/clang/test/CIR/Transforms/switch-fold.cir
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derek.holloway 7502bf64a4
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// RUN: cir-opt -cir-canonicalize -cir-simplify -o %t.cir %s
// RUN: FileCheck --input-file=%t.cir %s
!s32i = !cir.int<s, 32>
module {
cir.func @foldCascade(%arg0: !s32i) {
%0 = cir.alloca !s32i, !cir.ptr<!s32i>, ["a", init] {alignment = 4 : i64}
cir.store %arg0, %0 : !s32i, !cir.ptr<!s32i>
cir.scope {
%1 = cir.load %0 : !cir.ptr<!s32i>, !s32i
cir.switch (%1 : !s32i) {
cir.case(equal, [#cir.int<1> : !s32i]) {
cir.yield
}
cir.case(equal, [#cir.int<2> : !s32i]) {
cir.yield
}
cir.case(equal, [#cir.int<3> : !s32i]) {
%2 = cir.const #cir.int<2> : !s32i
cir.store %2, %0 : !s32i, !cir.ptr<!s32i>
cir.break
}
cir.yield
}
}
cir.return
}
//CHECK: cir.func @foldCascade
//CHECK: cir.switch(%[[COND:.*]] : !s32i) {
//CHECK-NEXT: cir.case(anyof, [#cir.int<1> : !s32i, #cir.int<2> : !s32i, #cir.int<3> : !s32i]) {
//CHECK-NEXT: %[[TWO:.*]] = cir.const #cir.int<2> : !s32i
//CHECK-NEXT: cir.store %[[TWO]], %[[ARG0:.*]] : !s32i, !cir.ptr<!s32i>
//CHECK-NEXT: cir.break
//CHECK-NEXT: }
//CHECK-NEXT: cir.yield
//CHECK-NEXT: }
cir.func @foldCascade2(%arg0: !s32i) {
%0 = cir.alloca !s32i, !cir.ptr<!s32i>, ["a", init] {alignment = 4 : i64}
cir.store %arg0, %0 : !s32i, !cir.ptr<!s32i>
cir.scope {
%1 = cir.load %0 : !cir.ptr<!s32i>, !s32i
cir.switch (%1 : !s32i) {
cir.case(equal, [#cir.int<0> : !s32i]) {
cir.yield
}
cir.case(equal, [#cir.int<2> : !s32i]) {
cir.yield
}
cir.case(equal, [#cir.int<4> : !s32i]) {
cir.break
}
cir.case(equal, [#cir.int<1> : !s32i]) {
cir.yield
}
cir.case(equal, [#cir.int<3> : !s32i]) {
cir.yield
}
cir.case(equal, [#cir.int<5> : !s32i]) {
cir.break
}
cir.yield
}
}
cir.return
}
//CHECK: @foldCascade2
//CHECK: cir.switch(%[[COND2:.*]] : !s32i) {
//CHECK: cir.case(anyof, [#cir.int<0> : !s32i, #cir.int<2> : !s32i, #cir.int<4> : !s32i]) {
//CHECK: cir.break
//cehck: }
//CHECK: cir.case(anyof, [#cir.int<1> : !s32i, #cir.int<3> : !s32i, #cir.int<5> : !s32i]) {
//CHECK: cir.break
//CHECK: }
//CHECK: cir.yield
//CHECK: }
cir.func @foldCascade3(%arg0: !s32i ) {
%0 = cir.alloca !s32i, !cir.ptr<!s32i>, ["a", init] {alignment = 4 : i64}
cir.store %arg0, %0 : !s32i, !cir.ptr<!s32i>
cir.scope {
%1 = cir.alloca !s32i, !cir.ptr<!s32i>, ["x"] {alignment = 4 : i64}
%2 = cir.load %0 : !cir.ptr<!s32i>, !s32i
cir.switch (%2 : !s32i) {
cir.case(equal, [#cir.int<0> : !s32i]) {
cir.yield
}
cir.case(equal, [#cir.int<1> : !s32i]) {
cir.yield
}
cir.case(equal, [#cir.int<2> : !s32i]) {
cir.yield
}
cir.case(equal, [#cir.int<3> : !s32i]) {
cir.yield
}
cir.case(equal, [#cir.int<4> : !s32i]) {
cir.yield
}
cir.case(equal, [#cir.int<5> : !s32i]) {
cir.break
}
cir.yield
}
}
cir.return
}
//CHECK: cir.func @foldCascade3
//CHECK: cir.switch(%[[COND3:.*]] : !s32i) {
//CHECK: cir.case(anyof, [#cir.int<0> : !s32i, #cir.int<1> : !s32i, #cir.int<2> : !s32i, #cir.int<3> : !s32i, #cir.int<4> : !s32i, #cir.int<5> : !s32i]) {
//CHECK: cir.break
//CHECK: }
//CHECK: cir.yield
//CHECK: }
cir.func @foldCascadeWithDefault(%arg0: !s32i ) {
%0 = cir.alloca !s32i, !cir.ptr<!s32i>, ["a", init] {alignment = 4 : i64}
cir.store %arg0, %0 : !s32i, !cir.ptr<!s32i>
cir.scope {
%1 = cir.load %0 : !cir.ptr<!s32i>, !s32i
cir.switch (%1 : !s32i) {
cir.case(equal, [#cir.int<3> : !s32i]) {
cir.break
}
cir.case(equal, [#cir.int<4> : !s32i]) {
cir.yield
}
cir.case(equal, [#cir.int<5> : !s32i]) {
cir.yield
}
cir.case(default, []) {
cir.yield
}
cir.case(equal, [#cir.int<6> : !s32i]) {
cir.yield
}
cir.case(equal, [#cir.int<7> : !s32i]) {
cir.break
}
cir.yield
}
}
cir.return
}
//CHECK: cir.func @foldCascadeWithDefault
//CHECK: cir.switch(%[[COND:.*]] : !s32i) {
//CHECK: cir.case(equal, [#cir.int<3> : !s32i]) {
//CHECK: cir.break
//CHECK: }
//CHECK: cir.case(anyof, [#cir.int<4> : !s32i, #cir.int<5> : !s32i]) {
//CHECK: cir.yield
//CHECK: }
//CHECK: cir.case(default, []) {
//CHECK: cir.yield
//CHECK: }
//CHECK: cir.case(anyof, [#cir.int<6> : !s32i, #cir.int<7> : !s32i]) {
//CHECK: cir.break
//CHECK: }
//CHECK: cir.yield
//CHECK: }
cir.func @foldAllCascade(%arg0: !s32i ) {
%0 = cir.alloca !s32i, !cir.ptr<!s32i>, ["a", init] {alignment = 4 : i64}
cir.store %arg0, %0 : !s32i, !cir.ptr<!s32i>
cir.scope {
%1 = cir.load %0 : !cir.ptr<!s32i>, !s32i
cir.switch (%1 : !s32i) {
cir.case(equal, [#cir.int<0> : !s32i]) {
cir.yield
}
cir.case(equal, [#cir.int<1> : !s32i]) {
cir.yield
}
cir.case(equal, [#cir.int<2> : !s32i]) {
cir.yield
}
cir.case(equal, [#cir.int<3> : !s32i]) {
cir.yield
}
cir.case(equal, [#cir.int<4> : !s32i]) {
cir.yield
}
cir.case(equal, [#cir.int<5> : !s32i]) {
cir.yield
}
cir.yield
}
}
cir.return
}
//CHECK: cir.func @foldAllCascade
//CHECK: cir.switch(%[[COND:.*]] : !s32i) {
//CHECK: cir.case(anyof, [#cir.int<0> : !s32i, #cir.int<1> : !s32i, #cir.int<2> : !s32i, #cir.int<3> : !s32i, #cir.int<4> : !s32i, #cir.int<5> : !s32i]) {
//CHECK: cir.yield
//CHECK: }
//CHECK: cir.yield
//CHECK: }
}