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TheRock/compiler/amd-llvm/llvm/test/Analysis/ScalarEvolution/nowrap-preinc-limits.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

46 lines
1.1 KiB
LLVM

; RUN: opt -disable-output "-passes=print<scalar-evolution>" < %s 2>&1 | FileCheck %s
define void @f(ptr %condition) {
; CHECK-LABEL: Classifying expressions for: @f
entry:
br label %loop
loop:
%idx = phi i32 [ 0, %entry ], [ %idx.inc, %loop ]
%idx.inc = add nsw i32 %idx, 1
%idx.inc2 = add i32 %idx.inc, 1
%idx.inc2.zext = zext i32 %idx.inc2 to i64
; CHECK: %idx.inc2.zext = zext i32 %idx.inc2 to i64
; CHECK-NEXT: --> {2,+,1}<nuw><%loop>
%c = load volatile i1, ptr %condition
br i1 %c, label %loop, label %exit
exit:
ret void
}
define void @g(ptr %condition) {
; CHECK-LABEL: Classifying expressions for: @g
entry:
br label %loop
loop:
%idx = phi i32 [ 0, %entry ], [ %idx.inc, %loop ]
%idx.inc = add nsw i32 %idx, 3
%idx.inc2 = add i32 %idx.inc, -1
%idx.inc2.sext = sext i32 %idx.inc2 to i64
; CHECK: %idx.inc2.sext = sext i32 %idx.inc2 to i64
; CHECK-NEXT: --> {2,+,3}<nuw><nsw><%loop>
%cond.gep = getelementptr inbounds i1, ptr %condition, i32 %idx.inc
%c = load volatile i1, ptr %cond.gep
br i1 %c, label %loop, label %exit
exit:
ret void
}