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TheRock/compiler/amd-llvm/llvm/test/Transforms/LoopUnroll/PowerPC/a2-high-cost-trip-count-computation.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

28 lines
970 B
LLVM

; RUN: opt < %s -S -mtriple=powerpc64-unknown-linux-gnu -mcpu=a2 -passes=loop-unroll | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
;; Check that we do emit expensive instructions to compute trip
;; counts when unrolling loops on the a2 (because we unroll a lot).
define i32 @test(i64 %v12, ptr %array, ptr %loc) {
; CHECK-LABEL: @test(
; CHECK: udiv
entry:
%step = load i64, ptr %loc, !range !0
br label %loop
loop: ; preds = %entry, %loop
%k.015 = phi i64 [ %v15, %loop ], [ %v12, %entry ]
%v14 = getelementptr inbounds i8, ptr %array, i64 %k.015
store i8 0, ptr %v14
%v15 = add nuw nsw i64 %k.015, %step
%v16 = icmp slt i64 %v15, 8193
br i1 %v16, label %loop, label %loopexit
loopexit: ; preds = %loop
ret i32 0
}
!0 = !{i64 1, i64 100}