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

33 lines
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LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; RUN: opt < %s --passes=canon-freeze -S | FileCheck %s
define void @check_duplicate_removal(i32 %n) {
; CHECK-LABEL: define void @check_duplicate_removal(
; CHECK-SAME: i32 [[N:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[N_FROZEN:%.*]] = freeze i32 [[N]]
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[T1:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[T3:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[T2:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[T3]], [[LOOP]] ]
; CHECK-NEXT: [[T3]] = add i32 [[N_FROZEN]], [[T2]]
; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[T2]], 0
; CHECK-NEXT: br i1 [[COND]], label [[LOOP]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
br label %loop
loop:
%t1 = phi i32 [ 0, %entry], [%t3, %loop ]
%t2 = phi i32 [ 0, %entry], [%t3, %loop ]
%t3 = add i32 %n, %t2
%.fr = freeze i32 %t3
%cond = icmp eq i32 %t2, 0
br i1 %cond, label %loop, label %exit
exit:
ret void
}