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TheRock/compiler/amd-llvm/llvm/test/Transforms/LoopVectorize/start-non-zero.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

31 lines
1.0 KiB
LLVM

; RUN: opt < %s -passes=loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -S | 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-LABEL: @start_at_nonzero(
;CHECK: mul nuw <4 x i32>
;CHECK: ret i32
define i32 @start_at_nonzero(ptr nocapture %a, i32 %start, i32 %end) {
entry:
%cmp3 = icmp slt i32 %start, %end
br i1 %cmp3, label %for.body.lr.ph, label %for.end
for.body.lr.ph:
%0 = sext i32 %start to i64
br label %for.body
for.body:
%indvars.iv = phi i64 [ %0, %for.body.lr.ph ], [ %indvars.iv.next, %for.body ]
%arrayidx = getelementptr inbounds i32, ptr %a, i64 %indvars.iv
%1 = load i32, ptr %arrayidx, align 4
%mul = mul nuw i32 %1, 333
store i32 %mul, ptr %arrayidx, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%2 = trunc i64 %indvars.iv.next to i32
%cmp = icmp slt i32 %2, %end
br i1 %cmp, label %for.body, label %for.end
for.end:
ret i32 4
}