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TheRock/compiler/amd-llvm/llvm/test/Transforms/LoopVectorize/preserve-dbg-loc-reduction-inloop.ll
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derek.holloway 7502bf64a4
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2026-09-02 16:34:47 -07:00

35 lines
1.2 KiB
LLVM

; RUN: opt < %s -passes=debugify,loop-vectorize -force-vector-width=4 -prefer-inloop-reductions -S | FileCheck %s -check-prefix DEBUGLOC
; Testing the debug locations of the generated vector intstructions are same as
; their scalar counterpart.
define i32 @reduction_sum(ptr %A, ptr %B) {
; DEBUGLOC-LABEL: define i32 @reduction_sum(
; DEBUGLOC: vector.body:
; DEBUGLOC: = load <4 x i32>, ptr %{{.+}}, align 4, !dbg ![[LOADLOC:[0-9]+]]
; DEBUGLOC: = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> %{{.+}}), !dbg ![[REDLOC:[0-9]+]]
; DEBUGLOC: loop:
; DEBUGLOC: %[[LOAD:.+]] = load i32, ptr %{{.+}}, align 4, !dbg ![[LOADLOC]]
; DEBUGLOC: = add i32 %{{.+}}, %[[LOAD]], !dbg ![[REDLOC]]
;
entry:
br label %loop
loop:
%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
%red = phi i32 [ 0, %entry ], [ %red.next, %loop ]
%gep = getelementptr inbounds i32, ptr %A, i64 %iv
%load = load i32, ptr %gep, align 4
%red.next = add i32 %red, %load
%iv.next = add i64 %iv, 1
%exitcond = icmp eq i64 %iv.next, 257
br i1 %exitcond, label %exit, label %loop
exit:
%red.lcssa = phi i32 [ %red.next, %loop ]
ret i32 %red.lcssa
}
; DEBUGLOC: ![[LOADLOC]] = !DILocation(line: 5
; DEBUGLOC: ![[REDLOC]] = !DILocation(line: 6