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TheRock/compiler/amd-llvm/llvm/test/Transforms/InstCombine/switch-select.ll
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
define void @test_ult_rhsc(i8 %x) {
; CHECK-LABEL: define void @test_ult_rhsc(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: switch i8 [[X]], label [[BB1:%.*]] [
; CHECK-NEXT: i8 2, label [[BB2:%.*]]
; CHECK-NEXT: i8 12, label [[BB3:%.*]]
; CHECK-NEXT: ]
; CHECK: bb1:
; CHECK-NEXT: call void @func1()
; CHECK-NEXT: unreachable
; CHECK: bb2:
; CHECK-NEXT: call void @func2()
; CHECK-NEXT: unreachable
; CHECK: bb3:
; CHECK-NEXT: call void @func3()
; CHECK-NEXT: unreachable
;
%val = add nsw i8 %x, -2
%cmp = icmp ult i8 %val, 11
%cond = select i1 %cmp, i8 %val, i8 6
switch i8 %cond, label %bb1 [
i8 0, label %bb2
i8 10, label %bb3
]
bb1:
call void @func1()
unreachable
bb2:
call void @func2()
unreachable
bb3:
call void @func3()
unreachable
}
define void @test_eq_lhsc(i8 %x) {
; CHECK-LABEL: define void @test_eq_lhsc(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: switch i8 [[X]], label [[BB1:%.*]] [
; CHECK-NEXT: i8 0, label [[BB2:%.*]]
; CHECK-NEXT: i8 10, label [[BB3:%.*]]
; CHECK-NEXT: ]
; CHECK: bb1:
; CHECK-NEXT: call void @func1()
; CHECK-NEXT: unreachable
; CHECK: bb2:
; CHECK-NEXT: call void @func2()
; CHECK-NEXT: unreachable
; CHECK: bb3:
; CHECK-NEXT: call void @func3()
; CHECK-NEXT: unreachable
;
%cmp = icmp eq i8 %x, 4
%cond = select i1 %cmp, i8 6, i8 %x
switch i8 %cond, label %bb1 [
i8 0, label %bb2
i8 10, label %bb3
]
bb1:
call void @func1()
unreachable
bb2:
call void @func2()
unreachable
bb3:
call void @func3()
unreachable
}
define void @test_ult_rhsc_invalid_cond(i8 %x, i8 %y) {
; CHECK-LABEL: define void @test_ult_rhsc_invalid_cond(
; CHECK-SAME: i8 [[X:%.*]], i8 [[Y:%.*]]) {
; CHECK-NEXT: [[VAL:%.*]] = add nsw i8 [[X]], -2
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i8 [[Y]], 11
; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i8 [[VAL]], i8 6
; CHECK-NEXT: switch i8 [[COND]], label [[BB1:%.*]] [
; CHECK-NEXT: i8 0, label [[BB2:%.*]]
; CHECK-NEXT: i8 10, label [[BB3:%.*]]
; CHECK-NEXT: i8 13, label [[BB3]]
; CHECK-NEXT: ]
; CHECK: bb1:
; CHECK-NEXT: call void @func1()
; CHECK-NEXT: unreachable
; CHECK: bb2:
; CHECK-NEXT: call void @func2()
; CHECK-NEXT: unreachable
; CHECK: bb3:
; CHECK-NEXT: call void @func3()
; CHECK-NEXT: unreachable
;
%val = add nsw i8 %x, -2
%cmp = icmp ult i8 %y, 11
%cond = select i1 %cmp, i8 %val, i8 6
switch i8 %cond, label %bb1 [
i8 0, label %bb2
i8 10, label %bb3
i8 13, label %bb3
]
bb1:
call void @func1()
unreachable
bb2:
call void @func2()
unreachable
bb3:
call void @func3()
unreachable
}
define void @test_ult_rhsc_fail(i8 %x) {
; CHECK-LABEL: define void @test_ult_rhsc_fail(
; CHECK-SAME: i8 [[X:%.*]]) {
; CHECK-NEXT: [[VAL:%.*]] = add nsw i8 [[X]], -2
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i8 [[VAL]], 11
; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i8 [[VAL]], i8 6
; CHECK-NEXT: switch i8 [[COND]], label [[BB1:%.*]] [
; CHECK-NEXT: i8 0, label [[BB2:%.*]]
; CHECK-NEXT: i8 10, label [[BB3:%.*]]
; CHECK-NEXT: i8 13, label [[BB3]]
; CHECK-NEXT: ]
; CHECK: bb1:
; CHECK-NEXT: call void @func1()
; CHECK-NEXT: unreachable
; CHECK: bb2:
; CHECK-NEXT: call void @func2()
; CHECK-NEXT: unreachable
; CHECK: bb3:
; CHECK-NEXT: call void @func3()
; CHECK-NEXT: unreachable
;
%val = add nsw i8 %x, -2
%cmp = icmp ult i8 %val, 11
%cond = select i1 %cmp, i8 %val, i8 6
switch i8 %cond, label %bb1 [
i8 0, label %bb2
i8 10, label %bb3
i8 13, label %bb3
]
bb1:
call void @func1()
unreachable
bb2:
call void @func2()
unreachable
bb3:
call void @func3()
unreachable
}
declare void @func1()
declare void @func2()
declare void @func3()
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