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TheRock/compiler/amd-llvm/llvm/test/Transforms/LoopUnroll/ARM/dont-unroll-loopdec.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

41 lines
1.0 KiB
LLVM

; RUN: opt -mtriple=thumbv8.1m.main -mattr=+mve.fp -passes=loop-unroll -S < %s | FileCheck %s
; CHECK-LABEL: foo
; CHECK: 5:
; CHECK: 6: ; preds = %6, %5
; CHECK: 15: ; preds = %6
; CHECK: br label %16
; CHECK: 16: ; preds = %15, %3
; CHECK: ret void
; CHECK: }
define void @foo(ptr nocapture, ptr nocapture readonly, i32) {
%4 = icmp sgt i32 %2, 0
br i1 %4, label %5, label %16
; <label>:5:
br label %6
; <label>:6:
%7 = phi i32 [ %13, %6 ], [ %2, %5 ]
%8 = phi ptr [ %10, %6 ], [ %1, %5 ]
%9 = phi ptr [ %12, %6 ], [ %0, %5 ]
%10 = getelementptr inbounds i8, ptr %8, i32 1
%11 = load i8, ptr %8, align 1
%12 = getelementptr inbounds i8, ptr %9, i32 1
store i8 %11, ptr %9, align 1
%13 = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %7, i32 1)
%14 = icmp sgt i32 %7, 1
br i1 %14, label %6, label %15
; <label>:15:
br label %16
; <label>:16:
ret void
}
declare i32 @llvm.loop.decrement.reg.i32.i32.i32(i32, i32)