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TheRock/compiler/amd-llvm/llvm/test/Transforms/LoopVectorize/widen-intrinsic.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

42 lines
1.7 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 5
; RUN: opt < %s -passes=loop-vectorize -force-vector-width=4 -S | FileCheck %s
; Check that we don't unnecessarily broadcast %pow
define void @powi_only_first_lane_used_of_second_arg(ptr %p, i32 %pow) {
; CHECK-LABEL: define void @powi_only_first_lane_used_of_second_arg(
; CHECK-SAME: ptr [[P:%.*]], i32 [[POW:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: br label %[[VECTOR_PH:.*]]
; CHECK: [[VECTOR_PH]]:
; CHECK-NEXT: br label %[[VECTOR_BODY:.*]]
; CHECK: [[VECTOR_BODY]]:
; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP0:%.*]] = getelementptr float, ptr [[P]], i32 [[INDEX]]
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x float>, ptr [[TMP0]], align 4
; CHECK-NEXT: [[TMP2:%.*]] = call <4 x float> @llvm.powi.v4f32.i32(<4 x float> [[WIDE_LOAD]], i32 [[POW]])
; CHECK-NEXT: store <4 x float> [[TMP2]], ptr [[TMP0]], align 4
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 4
; CHECK-NEXT: [[TMP3:%.*]] = icmp eq i32 [[INDEX_NEXT]], 1024
; CHECK-NEXT: br i1 [[TMP3]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK: [[MIDDLE_BLOCK]]:
; CHECK-NEXT: br label %[[EXIT:.*]]
; CHECK: [[EXIT]]:
; CHECK-NEXT: ret void
;
entry:
br label %loop
loop:
%iv = phi i32 [0, %entry], [%iv.next, %loop]
%p.gep = getelementptr float, ptr %p, i32 %iv
%x = load float, ptr %p.gep
%y = call float @llvm.powi(float %x, i32 %pow)
store float %y, ptr %p.gep
%iv.next = add i32 %iv, 1
%done = icmp eq i32 %iv.next, 1024
br i1 %done, label %exit, label %loop
exit:
ret void
}